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  • Stormwater Management Facilities in the right-of-way provide water quality function before flows infiltrate at dry wells under the streets.  The engineered soil is the filter medium.  The inlet with steel grate is an overflow, to prevent backup flooding in the streets during storms of greater intensity or extended duration.  New Columbia project for the Housing Authority of Portland.
    Pocket-Swale-with-Overflow.jpg
  • Stormwater Management Facilities in the right-of-way provide water quality function before flows infiltrate at dry wells under the streets.  The engineered soil is the filter medium.  The inlet with steel grate is an overflow, to prevent backup flooding in the streets during storms of greater intensity or extended duration.  New Columbia project for the Housing Authority of Portland.
    Storm-Water-Swale-with-Overflow.jpg
  • Stormwater Management Facilities in the right-of-way provide water quality function before flows infiltrate at dry wells under the streets.  The engineered soil is the filter medium.  The inlet with steel grate is an overflow, to prevent backup flooding in the streets during storms of greater intensity or extended duration.  New Columbia project for the Housing Authority of Portland.
    Bioswale-with-Overflow.jpg
  • The Living Roof of the California Academy of Sciences building within Golden Gate Park, and adjacent to the De Young Museum.  The roof provides stormwater management for both flow reduction and water quality.  The living roof contains over 40 native California plant species and provides habitat for a wide variety of wildlife, particularly butterflies.  The rooftop's seven undulating green hillocks pay homage to the iconic topography of San Francisco and blurs the boundary between building and parkland.  Living roofs significantly reduce Heat Island Effect, and the vent windows help manage interior climate.
    Living-Roof.jpg
  • Reservoir 5, Mount Tabor Park
    09-September-2014.jpg
  • Mount Tabor Park
    August 2014 Mount Tabor Park Calenda...jpg
  • Sun's first rays on Gatehouse 5, while fog blankets the city, Mount Tabor Park, Portland, Oregon, USA.
    AJH_12b_December-2020.jpg
  • Fall colors, Mount Tabor Park
    10-October-2014.jpg
  • Sunrise over Mount Hood, Mount Tabor Park
    08-August-2014.jpg
  • Reflections on Reservoir 5, Mount Tabor Park
    04-April-2014.jpg
  • Reservoir 5, Mount Tabor Park, Portland, Oregon
    September 2014 Mount Tabor Park Cale...jpg
  • Bull Run Lake 968m (3,175ft), with Mount Hood 3,424m (11,234ft) beyond.  This is the highest reservoir in the Bull Run Watershed and is celebrated for the high purity of its water.  This is the origin of Portland's drinking water.  Nikon D700, 24-70/2.8.
    Mt Hood Bull Run Lake Panorama.jpg
  • Acer circinatum (Vine Maple), Mount Tabor Park
    11-November-2014.jpg
  • Reflections on Reservoir 5, Mount Tabor Park
    April 2014 Mount Tabor Park Calendar.jpg
  • Fall colors, Mount Tabor Park, Portland, Oregon
    October 2014 Mount Tabor Park Calend...jpg
  • Acer circinatum (Vine Maple), Mount Tabor Park, Portland, Oregon
    November 2014 Mount Tabor Park Calen...jpg
  • Dam 1, a curved concrete gravity dam, constructed 1925-1929, in the 102-square-mile Bull Run watershed near Mount Hood, has a maximum reservoir capacity of 10 billion gallons, making it the primary contributor to the Portland Water System Distribution Area.  The spillway gates visible in this photo, added to the dam in 1955, increased the reservoir capacity from the original 8.8 billion gallons to 10 billion gallons.
    Spillway Dam 1 Bull Run.jpg
  • Dam 1, a curved concrete gravity dam, constructed 1925-1929, in the 102-square-mile Bull Run watershed near Mount Hood, has a maximum reservoir capacity of 10 billion gallons, making it the primary contributor to the Portland Water System Distribution Area.
    Steps Dam Bull Run.jpg
  • Bull Run Lake 968m (3,175ft), with Mount Hood 3,424m (11,234ft) beyond.  This is the highest reservoir in the Bull Run Watershed and is celebrated for the high purity of its water.  This is the origin of Portland's drinking water.
    Mount Hood Bull Run Lake.jpg
  • The Bull Run River is active salmon habitat, Bull Run watershed near Mount Hood, Oregon.
    Bull Run River Oregon.jpg
  • Outlet valve at Bull Run Lake 968m (3,175ft), with Mount Hood 3,424m (11,234ft) beyond. This is the highest reservoir in the Bull Run Watershed and is celebrated for the high purity of its water. This is the origin of Portland's drinking water, which flows by gravity to the Mount Tabor reservoirs before entering the City's water distribution network.
    Valve Mount Hood Bull Run Lake.jpg
  • Dam 1, a curved concrete gravity dam, constructed 1925-1929, in the 102-square-mile Bull Run watershed near Mount Hood, has a maximum reservoir capacity of 10 billion gallons, making it the primary contributor to the Portland Water System Distribution Area.  The spillway gates visible in this photo, added to the dam in 1955, increased the reservoir capacity from the original 8.8 billion gallons to 10 billion gallons.
    Stilling Basin Dam 1 Bull Run.jpg
  • Dam 1, a curved concrete gravity dam, constructed 1925-1929, in the 102-square-mile Bull Run watershed near Mount Hood, has a maximum reservoir capacity of 10 billion gallons, making it the primary contributor to the Portland Water System Distribution Area.  The spillway gates visible in this photo, added to the dam in 1955, increased the reservoir capacity from the original 8.8 billion gallons to 10 billion gallons.
    Spillway Gates Vertical Bull Run.jpg
  • Water level gauge and outlet valve at Bull Run Lake 968m (3,175ft). This is the highest reservoir in the Bull Run Watershed and is celebrated for the high purity of its water. This is the origin of Portland's drinking water, which flows by gravity to the Mount Tabor reservoirs before entering the City's water distribution network.
    Gauge and Valve Bull Run Lake.jpg
  • Dam 1, a curved concrete gravity dam, constructed 1925-1929, in the 102-square-mile Bull Run watershed near Mount Hood, has a maximum reservoir capacity of 10 billion gallons, making it the primary contributor to the Portland Water System Distribution Area.  The spillway gates visible in this photo, added to the dam in 1955, increased the reservoir capacity from the original 8.8 billion gallons to 10 billion gallons.
    Spillway Gates Horizontal Bull Run.jpg
  • Dam 1, a curved concrete gravity dam, constructed 1925-1929, in the 102-square-mile Bull Run watershed near Mount Hood, has a maximum reservoir capacity of 10 billion gallons, making it the primary contributor to the Portland Water System Distribution Area.  The spillway gates visible in this photo, added to the dam in 1955, increased the reservoir capacity from the original 8.8 billion gallons to 10 billion gallons.
    Dam 1 Gatehouse Bull Run.jpg
  • Outlet valve at Bull Run Lake 968m (3,175ft), with Mount Hood 3,424m (11,234ft) beyond. This is the highest reservoir in the Bull Run Watershed and is celebrated for the high purity of its water. This is the origin of Portland's drinking water, which flows by gravity to the Mount Tabor reservoirs before entering the City's water distribution network.
    Mt Hood and Valve Bull Run Lake.jpg
  • Tailrace at Dam 1, a curved concrete gravity dam, constructed 1925-1929, in the 102-square-mile Bull Run watershed near Mount Hood, has a maximum reservoir capacity of 10 billion gallons, making it the primary contributor to the Portland Water System Distribution Area.  This is the origin of Portland's drinking water, which flows by gravity to the Mount Tabor reservoirs before entering the City's water distribution network.
    Red Tailrace Dam 1 Bull Run.jpg
  • Dam 1, a curved concrete gravity dam, constructed 1925-1929, in the 102-square-mile Bull Run watershed near Mount Hood, has a maximum reservoir capacity of 10 billion gallons, making it the primary contributor to the Portland Water System Distribution Area.
    Dam 1 Bull Run Watershed.jpg
  • Spillway detail and access stairs at Reservoir 5, Mount Tabor Park Portland Oregon
    Spillway-Detail-Reservoir-5.jpg
  • Mount Tabor Park
    AJH-11b-November-2016-Mt-Tabor-Park-...jpg
  • Gatehouse 1 and Dosing House at Reservoir 1, one of three open reservoirs at Mount Tabor Park and of five total in Portland.  The 3 open reservoirs in Mount Tabor Park, with their ancillary structures, were placed in the National Register of Historic Places on January 15, 2004.  Environmental Protection Agency (EPA) regulation: Long Term 2 Enhanced Surface Water Treatment Rule, referred to as the LT2 rule imposes new requirements that open water reservoirs be covered, buried or additionally treated.  This applies to Portland's five open reservoirs and to the unfiltered Bull Run source supplying them. Mount Tabor Park, Portland, Oregon, USA.
    AJH-05a-May-2015-Mount-Tabor-Park-Ca...jpg
  • Sun's first rays on Gatehouse 5, while fog blankets the city, Mount Tabor Park, Portland, Oregon, USA.
    Gatehouse 5 Fog Sunrise Mt Tabor Par...jpg
  • Fall colors, Mount Tabor Park Portland Oregon
    Fall-Colors-Mt-Tabor-Park.jpg
  • Empty Reservoir 1, Mount Tabor Park, Portland, Oregon, USA.
    AJH-11a-November-2015-Mount-Tabor-Pa...jpg
  • Mount Tabor Park
    AJH-04b-April-2016-Mt-Tabor-Park-Cal...jpg
  • Valves at Gatehouse 1, Reservoir 1.  Mount Tabor Park, Portland.  This is one of three open reservoirs at Mount Tabor Park, and of five total in Portland.  The 3 open reservoirs in Mount Tabor Park, with their ancillary structures, were placed in the National Register of Historic Places on January 15, 2004.  Environmental Protection Agency (EPA) regulation: Long Term 2 Enhanced Surface Water Treatment Rule, referred to as the LT2 rule imposes new requirements that open water reservoirs be covered, buried or additionally treated.  This applies to Portland's five open reservoirs and to the unfiltered Bull Run source supplying them.
    AJH-01b-January-2015-Mount-Tabor-Par...jpg
  • Dosing House at Reservoir 1, one of three open reservoirs at Mount Tabor Park and of five total in Portland.  The 3 open reservoirs in Mount Tabor Park, with their ancillary structures, were placed in the National Register of Historic Places on January 15, 2004.  Environmental Protection Agency (EPA) regulation: Long Term 2 Enhanced Surface Water Treatment Rule, referred to as the LT2 rule imposes new requirements that open water reservoirs be covered, buried or additionally treated.  This applies to Portland's five open reservoirs and to the unfiltered Bull Run source supplying them. Mount Tabor Park, Portland, Oregon, USA.
    Dosing House 1 Mt Tabor Park.jpg
  • Gatehouse 1 and Dosing House at Reservoir 1, one of three open reservoirs at Mount Tabor Park and of five total in Portland.  The 3 open reservoirs in Mount Tabor Park, with their ancillary structures, were placed in the National Register of Historic Places on January 15, 2004.  Environmental Protection Agency (EPA) regulation: Long Term 2 Enhanced Surface Water Treatment Rule, referred to as the LT2 rule imposes new requirements that open water reservoirs be covered, buried or additionally treated.  This applies to Portland's five open reservoirs and to the unfiltered Bull Run source supplying them. Mount Tabor Park, Portland, Oregon, USA.
    Gatehouse 1 Dosing House Mt Tabor Pa...jpg
  • Umbrella Plaza, Providence Portland Medical Office.  Designers: Vala Christensen Landscape Architects, KPFF Consulting Engineers, Michael Maiden Foundry.  NE 45th Avenue and Halsey Street, Portland, Oregon.
    Umbrella-Stormwater-Plaza.jpg
  • Landscaped stormwater planter strip manages rain water from the "first flush" during a rainfall event.  Stormwater has filled the first chamber and is overtopping a weir and filling the second chamber.  Green streets collect stormwater runoff and route it through facilities like this planter where vegetation and soils filter pollutants before allowing water to soak into the ground.  These facilities replenish groundwater and enhance neighborhood green spaces.  Green streets require routine cleaning and maintenance.  This facility is on NE 47th Avenue at NE Davis Street in Portland, Oregon.
    Green-Street-Stormwater-Planter.jpg
  • Art detail in undulating rail wall, Tanner Springs Park, Portland, Oregon.  This park in the Pearl District of downtown Portland, Oregon is a modern-day experiment in sustainable design and stormwater management.  The water feature, designed by Herbert Dreiseitl is an effort to re-create the pre-industrial wetlands and riparian ecology of the original Tanner Creek that flowed to the nearby Willamette River in the early 1800s.  One sustainability feature of the park is the collection, treatment and recirculation of all rainwater that falls within the park.  Additional sustainability features include the re-use of basalt cobbles, or Belgian Blocks, for walkways and the re-use of rusty railroad rails for the undulating wall.
    Tanner Springs Art 2.jpg
  • Forest plants in the Bull Run watershed near Mount Hood, Oregon.  This is the origin of Portland's drinking water, which flows by gravity to the Mount Tabor reservoirs before entering the City's water distribution network.
    Forest plants 1 Bull Run.jpg
  • Scenic view of the Willamette River, bank full from spring snowmelt.  Looking south from George Rogers Park in Lake Oswego.  The concrete structure in the river was a log hoist built in 1905 by Crown Willamette Paper Company and operated until the 1920s.  More recently, the private owner abandoned an attempt to improve it as a residence and today it lies abandoned.
    Willamette-River-Log-Hoist-Lake-Oswe...jpg
  • Effective stormwater management in a dense urban area.  Swales and stormwater planters collect stormwater from roof downspouts, parking lot and street.  Appropriate vegetation filters out pollutants in the stormwater before it soaks into the ground, naturally recharging groundwater.  RiverEast Center Stormwater Management facility - a public-private stormwater management partnership (PPP) in Portland, Oregon.
    Roof-Downspout-and-Weir.jpg
  • A stormwater curb extension retrofit to an existing street.  Stormwater management facilities like this one are are also known as Green Street treatments.  NW 21st Avenue and Raleigh Street, Portland, Oregon.
    Green-Street-NW-21st-Ave-East.jpg
  • Umbrella Sculpture, stormwater swale and plaza, Providence Portland Medical Office.  Designers: Vala Christensen Landscape Architects, KPFF Consulting Engineers, Michael Maiden Foundry.  NE 45th Avenue and Halsey Street, Portland, Oregon.
    Umbrella-Stormwater-Sculpture.jpg
  • Pocket swale between street and sidewalk for stormwater management, Providence Portland Medical Office.  Designers: Vala Christensen Landscape Architects, KPFF Consulting Engineers, Michael Maiden Foundry.  NE 45th Avenue and Halsey Street, Portland, Oregon.
    Green-Street-Pocket-Swale.jpg
  • Sun sets over Reservoir 5, one of three open reservoirs at Mt Tabor Park and of five total in Portland.  The 3 open reservoirs in Mount Tabor Park were placed in the National Register of Historic Places on January 15, 2004.  Environmental Protection Agency (EPA) regulation: Long Term 2 Enhanced Surface Water Treatment Rule, referred to as the LT2 rule imposes new requirements that open water reservoirs be covered, buried or additionally treated.  This applies to Portland's five open reservoirs and to the unfiltered Bull Run sourse supplying them.  Photo: September 2004.  Nikon F4, 20-35/2.8D.  Kodak E100VS
    5_May.jpg
  • Channel drain detail of stormwater facilities, Tanner Springs Park, Portland, Oregon.  This park in the Pearl District of downtown Portland, Oregon is a modern-day experiment in sustainable design and stormwater management.  The water feature, designed by Herbert Dreiseitl is an effort to re-create the pre-industrial wetlands and riparian ecology of the original Tanner Creek that flowed to the nearby Willamette River in the early 1800s.  One sustainability feature of the park is the collection, treatment and recirculation of all rainwater that falls within the park.  Additional sustainability features include the re-use of basalt cobbles, or Belgian Blocks, for walkways and the re-use of rusty railroad rails for the undulating wall.
    Channel Drain Steps.jpg
  • Vegetated Sand Filter.  Tanner Springs Park in the Pearl District of downtown Portland, Oregon is a modern-day experiment in sustainable design and stormwater management.  The water feature, designed by Herbert Dreiseitl is an effort to re-create the pre-industrial wetlands and riparian ecology of the original Tanner Creek that flowed to the nearby Willamette River in the early 1800s.  One sustainability feature of the park is the collection, treatment and recirculation of all rainwater that falls within the park.  Additional sustainability features include the re-use of basalt cobbles, or Belgian Blocks, for walkways and the re-use of rusty railroad rails for the undulating wall.
    Vegetated Sand Filter.jpg
  • Path and forest plants in the Bull Run watershed near Mount Hood, Oregon.  This is the origin of Portland's drinking water, which flows by gravity to the Mount Tabor reservoirs before entering the City's water distribution network.
    Forest Plants and Path Bull Run.jpg
  • A stormwater curb extension retrofit to an existing street.  Stormwater management facilities like this one are are also known as Green Street treatments.  NW 21st Avenue and Raleigh Street, Portland, Oregon.
    Weir-Stormwater-Curb-Extension.jpg
  • Gatehouse 5 and reflections on Reservoir 5, with the City of Portland beyond.  This is one of three open reservoirs at Mount Tabor Park, and of five total in Portland.  The 3 open reservoirs in Mount Tabor Park, with their ancillary structures, were placed in the National Register of Historic Places on January 15, 2004.  Environmental Protection Agency (EPA) regulation: Long Term 2 Enhanced Surface Water Treatment Rule, referred to as the LT2 rule imposes new requirements that open water reservoirs be covered, buried or additionally treated.  This applies to Portland's five open reservoirs and to the unfiltered Bull Run source supplying them.
    2011 Mt Tabor Park Calendar.jpg
  • Gatehouse 5 at Reservoir 5, one of three open reservoirs at Mount Tabor Park and of five total in Portland.  The 3 open reservoirs in Mount Tabor Park, with their  ancillary structures, were placed in the National Register of Historic Places on January 15, 2004.  Environmental Protection Agency (EPA) regulation: Long Term 2 Enhanced Surface Water Treatment Rule, referred to as the LT2 rule imposes new requirements that open water reservoirs be covered, buried or additionally treated.  This applies to Portland's five open reservoirs and to the unfiltered Bull Run sourse supplying them.
    3_March.jpg
  • Tanner Springs Park in the Pearl District of downtown Portland, Oregon is a modern-day experiment in sustainable design and stormwater management.  The water feature, designed by Herbert Dreiseitl is an effort to re-create the pre-industrial wetlands and riparian ecology of the original Tanner Creek that flowed to the nearby Willamette River in the early 1800s.  One sustainability feature of the park is the collection, treatment and recirculation of all rainwater that falls within the park.  Additional sustainability features include the re-use of basalt cobbles, or Belgian Blocks, for walkways and the re-use of rusty railroad rails for the undulating wall.
    Tanner-Springs-Park-Rail-Detail.jpg
  • Effective stormwater management in a dense urban area.  Swales and stormwater planters collect stormwater from roof downspouts, parking lot and street.  Appropriate vegetation filters out pollutants in the stormwater before it soaks into the ground, naturally recharging groundwater.  RiverEast Center Stormwater Management facility - a public-private stormwater management partnership (PPP) in Portland, Oregon.
    Swale-and-Jogger-in-Rain.jpg
  • A stormwater curb extension retrofit to an existing street.  Stormwater management facilities like this one are are also known as Green Street treatments.  NW 21st Avenue and Raleigh Street, Portland, Oregon.
    Green-Street-NW-21st-Ave-West.jpg
  • A stormwater curb extension retrofit to an existing street.  Stormwater management facilities like this one are are also known as Green Street treatments.  NW 21st Avenue and Raleigh Street, Portland, Oregon.
    Green-Street-Weir-NW-21st-Ave-East.jpg
  • Island silhouette on Waldo Lake 1650m (5,414ft), with sunset over Klovdahl Bay.  Viewed from Shadow Bay on the east shore.  Waldo Lake is the headwaters of the North Fork of the Middle Fork of the Willamette River, and the only lake in the Oregon Scenic Waterways System.
    Waldo-Lake-Island-Silhouette-Horizon...jpg
  • Gatehouse 5 and reflections on Reservoir 5, with the City of Portland beyond.  This is one of three open reservoirs at Mount Tabor Park, and of five total in Portland.  The 3 open reservoirs in Mount Tabor Park, with their ancillary structures, were placed in the National Register of Historic Places on January 15, 2004.  Environmental Protection Agency (EPA) regulation: Long Term 2 Enhanced Surface Water Treatment Rule, referred to as the LT2 rule imposes new requirements that open water reservoirs be covered, buried or additionally treated.  This applies to Portland's five open reservoirs and to the unfiltered Bull Run source supplying them.
    _Cover 2011.jpg
  • Reservoir 1 (1894) is one of three open reservoirs at Mount Tabor Park and of five total in Portland.  Mount Tabor's three open reservoirs and their ancillary structures were placed in the National Register of Historic Places on January 15, 2004.  The Environmental Protection Agency (EPA) regulation known as the Long Term 2 Enhanced Surface Water Treatment Rule (aka the LT2 Rule) imposes new requirements that open water reservoirs be covered, buried or additionally treated.  This applies to Portland's five open reservoirs and to the unfiltered Bull Run source supplying them.
    AJH_01b_January-2019.jpg
  • Fresh snow blankets Reservoir 5, one of three open reservoirs at Mt Tabor Park and of five total in Portland (background).  The 3 open reservoirs in Mount Tabor Park were placed in the National Register of Historic Places on January 15, 2004.  Environmental Protection Agency (EPA) regulation: Long Term 2 Enhanced Surface Water Treatment Rule, referred to as the LT2 rule imposes new requirements that open water reservoirs be covered, buried or additionally treated.  This applies to Portland's five open reservoirs and to the unfiltered Bull Run sourse supplying them.  Photo: January 2002.  Nikon F4, 24-85/2.8-4D.  Kodak E100VS
    Reservoir 5 and City of Portland Mou...jpg
  • In 1903, John Charles Olmsted of the Massachusetts-based landscape design firm Olmsted Brothers recommended that a city park be developed at Mount Tabor.  Portland Parks Superintendent Emanuel T. Mische, who had worked at Olmsted Brothers, consulted with Olmsted on the park layout and integration of the reservoirs into the park design. This is one of three open reservoirs at Mt Tabor Park and of five total in Portland.  The 3 open reservoirs in Mount Tabor Park were placed in the National Register of Historic Places on January 15, 2004.  Environmental Protection Agency (EPA) regulation: Long Term 2 Enhanced Surface Water Treatment Rule, referred to as the LT2 rule imposes new requirements that open water reservoirs be covered, buried or additionally treated.  This applies to Portland's five open reservoirs and to the unfiltered Bull Run sourse supplying them. Portland, Oregon, USA.
    01-January-2014.jpg
  • Study of drinking water Reservoir 5, which violates the EPA LT2 Rule, Mount Tabor Park,  Portland, Oregon.
    Study of Drinking Water Reservoir 5,...jpg
  • Wrought iron fence, Mount Tabor Park,  Portland, Oregon, USA. In 1903, John Charles Olmsted of the Massachusetts-based landscape design firm Olmsted Brothers recommended that a city park be developed at Mount Tabor.  Portland Parks Superintendent Emanuel T. Mische, who had worked at Olmsted Brothers, consulted with Olmsted on the park layout and integration of the reservoirs into the park design.
    Wrought Iron Fence, Mt Tabor Park.jpg
  • Landscaped stormwater planter strip manages rain water from the "first flush" during a rainfall event.  Stormwater has filled the first chamber and is overtopping a weir and filling the second chamber.  Green streets collect stormwater runoff and route it through facilities like this planter where vegetation and soils filter pollutants before allowing water to soak into the ground.  These facilities replenish groundwater and enhance neighborhood green spaces.  Green streets require routine cleaning and maintenance.  This facility is on NE 47th Avenue at NE Davis Street in Portland, Oregon.
    Storm-Water-Planter-First-Flush.jpg
  • Boardwalk detail, Tanner Springs Park, Portland, Oregon.  This park in the Pearl District of downtown Portland, Oregon is a modern-day experiment in sustainable design and stormwater management.  The water feature, designed by Herbert Dreiseitl is an effort to re-create the pre-industrial wetlands and riparian ecology of the original Tanner Creek that flowed to the nearby Willamette River in the early 1800s.  One sustainability feature of the park is the collection, treatment and recirculation of all rainwater that falls within the park.  Additional sustainability features include the re-use of basalt cobbles, or Belgian Blocks, for walkways and the re-use of rusty railroad rails for the undulating wall.
    Tanner Springs Boardwalk.jpg
  • Tanner Springs Park in the Pearl District of downtown Portland, Oregon is a modern-day experiment in sustainable design and stormwater management.  The water feature, designed by Herbert Dreiseitl is an effort to re-create the pre-industrial wetlands and riparian ecology of the original Tanner Creek that flowed to the nearby Willamette River in the early 1800s.  One sustainability feature of the park is the collection, treatment and recirculation of all rainwater that falls within the park.  Additional sustainability features include the re-use of basalt cobbles, or Belgian Blocks, for walkways and the re-use of rusty railroad rails for the undulating wall.
    Basalt-Cobble-Rainwater-Channel.jpg
  • The end of a long exposure cuts off the flight path of a small plane mid-way over Portland Water Bureau's open Reservoir 6 in Mount Tabor Park.  This is one of three open reservoirs at Mt Tabor Park and of five total in Portland.  The 3 open reservoirs in Mount Tabor Park were placed in the National Register of Historic Places on January 15, 2004.  Environmental Protection Agency (EPA) regulation: Long Term 2 Enhanced Surface Water Treatment Rule, referred to as the LT2 rule imposes new requirements that open water reservoirs be covered, buried or additionally treated.  This applies to Portland's five open reservoirs and to the unfiltered Bull Run sourse supplying them.  Photo: July 2011.  Nikon D700, 20-35/2.8D.
    Flight Path Interrupted, Mt Tabor Pa...jpg
  • Effective stormwater management in a dense urban area.  Swales and stormwater planters collect stormwater from roof downspouts, parking lot and street.  Appropriate vegetation filters out pollutants in the stormwater before it soaks into the ground, naturally recharging groundwater.  RiverEast Center Stormwater Management facility - a public-private stormwater management partnership (PPP) in Portland, Oregon.
    Swale-Jogger-and-Public-Path.jpg
  • A stormwater curb extension retrofit to an existing street.  Stormwater management facilities like this one are are also known as Green Street treatments.  NW 21st Avenue and Raleigh Street, Portland, Oregon.
    Green-Street-Planter-Fescue-BW.jpg
  • Sunrise on Waldo Lake 1650m (5,414ft).  Waldo Lake is the headwaters of the North Fork of the Middle Fork of the Willamette River, and the only lake in the Oregon Scenic Waterways System.  Mt Ray 2134m (7,002ft) is visible on skyline at left, while the summit of Fuji Mountain 2177m (7,144ft) lies partially obscured by cloud (center).
    Waldo-Lake-Shoreline-Wilderness.jpg
  • Valve details at Reservoir 1 Gatehouse. Reservoir 1 (1894) is one of three open reservoirs at Mount Tabor Park and of five total in Portland.  Mount Tabor's three open reservoirs and their ancillary structures were placed in the National Register of Historic Places on January 15, 2004.  The Environmental Protection Agency (EPA) regulation known as the Long Term 2 Enhanced Surface Water Treatment Rule (aka the LT2 Rule) imposes new requirements that open water reservoirs be covered, buried or additionally treated.  This applies to Portland's five open reservoirs and to the unfiltered Bull Run source supplying them.
    AJH_04b_April-2020.jpg
  • Railing and snow at Reservoir 5, one of three open reservoirs at Mt Tabor Park and of five total in Portland.  The 3 open reservoirs in Mount Tabor Park were placed in the National Register of Historic Places on January 15, 2004.  Environmental Protection Agency (EPA) regulation: Long Term 2 Enhanced Surface Water Treatment Rule, referred to as the LT2 rule imposes new requirements that open water reservoirs be covered, buried or additionally treated.  This applies to Portland's five open reservoirs and to the unfiltered Bull Run sourse supplying them.  Photo: January 2002.  Nikon F4, 24-85/2.8-4D.  Kodak E100VS
    January 2014 Mount Tabor Park Calend...jpg
  • Oak tree at the tennis courts, Mount Tabor Park, Portland, Oregon, USA. In 1903, John Charles Olmsted of the Massachusetts-based landscape design firm Olmsted Brothers recommended that a city park be developed at Mount Tabor.  Portland Parks Superintendent Emanuel T. Mische, who had worked at Olmsted Brothers, consulted with Olmsted on the park layout and integration of the reservoirs into the park design.
    Oak Tree, Mt Tabor Park.jpg
  • Reservoir 6 headhouse, which violates the EPA LT2 Rule, Mount Tabor Park,  Portland, Oregon, USA.
    Gatehouse 6, Mt Tabor Park.jpg
  • Rainwater from a household roof gushes down a rain chain during a storm.  Rain chains are decorative alternatives to a downspout.  They make a water feature out of the conveyance of rainwater from the roof gutters down to a drain or to a storage container.  RRS BD700-L, RRS BH-55 PCL, RRS TVC-33, RRS LCF-10. http://reallyrightstuff.com/WebsiteInfo.aspx?fc=125
    Rain-Chain-and-Stormwater.jpg
  • Rainwater from a household roof gushes down a rain chain during a storm.  Rain chains are decorative alternatives to a downspout.  They make a water feature out of the conveyance of rainwater from the roof gutters down to a drain or to a storage container.  RRS BD700-L, RRS BH-55 PCL, RRS TVC-33, RRS LCF-10.
    Rain-Chain-and-Stormwater-Panorama.jpg
  • Rainwater from a household roof gushes down a rain chain during a storm.  Rain chains are decorative alternatives to a downspout.  They make a water feature out of the conveyance of rainwater from the roof gutters down to a drain or to a storage container.
    Rain Chain Downspout.jpg
  • Vegetated Filter Strip treats rain water runoff from parking lot before it reaches a swale which in turn discharges the stormwater into a nearby stream.   Vegetated filter strips are now a widely accepted best management practice (BMP) for low impact development.  They work on the principle of contact time and therefore require low runoff velocities.  This is achieved by maintaining low-angled slopes and avoiding flow-concentrating features such as curbs.
    Vegetated-Filter-Strip.jpg
  • Detail in undulating rail wall, Tanner Springs Park, Portland, Oregon.  This park in the Pearl District of downtown Portland, Oregon is a modern-day experiment in sustainable design and stormwater management.  The water feature, designed by Herbert Dreiseitl is an effort to re-create the pre-industrial wetlands and riparian ecology of the original Tanner Creek that flowed to the nearby Willamette River in the early 1800s.  One sustainability feature of the park is the collection, treatment and recirculation of all rainwater that falls within the park.  Additional sustainability features include the re-use of basalt cobbles, or Belgian Blocks, for walkways and the re-use of rusty railroad rails for the undulating wall.
    Undulating Rail Wall.jpg
  • Art detail in undulating rail wall, Tanner Springs Park, Portland, Oregon.  This park in the Pearl District of downtown Portland, Oregon is a modern-day experiment in sustainable design and stormwater management.  The water feature, designed by Herbert Dreiseitl is an effort to re-create the pre-industrial wetlands and riparian ecology of the original Tanner Creek that flowed to the nearby Willamette River in the early 1800s.  One sustainability feature of the park is the collection, treatment and recirculation of all rainwater that falls within the park.  Additional sustainability features include the re-use of basalt cobbles, or Belgian Blocks, for walkways and the re-use of rusty railroad rails for the undulating wall.
    Tanner Springs Art 1.jpg
  • Forest plants in the Bull Run watershed near Mount Hood, Oregon.  This is the origin of Portland's drinking water, which flows by gravity to the Mount Tabor reservoirs before entering the City's water distribution network.
    Forest plants 2 Bull Run.jpg
  • Tanner Springs Park in the Pearl District of downtown Portland, Oregon is a modern-day experiment in sustainable design and stormwater management.  The water feature, designed by Herbert Dreiseitl is an effort to re-create the pre-industrial wetlands and riparian ecology of the original Tanner Creek that flowed to the nearby Willamette River in the early 1800s.  One sustainability feature of the park is the collection, treatment and recirculation of all rainwater that falls within the park.  Additional sustainability features include the re-use of basalt cobbles, or Belgian Blocks, for walkways and the re-use of rusty railroad rails for the undulating wall.
    Tanner-Springs-Park-99-Rails.jpg
  • The moon and security lights reflect on Portland Water Bureau's open Reservoir 6 in Mount Tabor Park.  This is one of three open reservoirs at Mt Tabor Park and of five total in Portland.  The 3 open reservoirs in Mount Tabor Park were placed in the National Register of Historic Places on January 15, 2004.  Environmental Protection Agency (EPA) regulation: Long Term 2 Enhanced Surface Water Treatment Rule, referred to as the LT2 rule imposes new requirements that open water reservoirs be covered, buried or additionally treated.  This applies to Portland's five open reservoirs and to the unfiltered Bull Run sourse supplying them.  Photo: July 2011.  Nikon D700, 20-35/2.8D.
    Eight Lights, Reservoir 6, Mt Tabor ...jpg
  • Rounded river pebbles are used in swales and stormwater planters to protect filter media from erosive flow velocities.
    Rain-Garden-Detail-Pebbles.jpg
  • Effective stormwater management in a dense urban area.  Swales and stormwater planters collect stormwater from roof downspouts, parking lot and street.  Appropriate vegetation filters out pollutants in the stormwater before it soaks into the ground, naturally recharging groundwater.  RiverEast Center Stormwater Management facility - a public-private stormwater management partnership (PPP) in Portland, Oregon.
    Parking-Lot-Stormwater-Swale.jpg
  • A stormwater curb extension retrofit to an existing street.  Stormwater management facilities like this one are are also known as Green Street treatments.  NW 21st Avenue and Raleigh Street, Portland, Oregon.
    Green-Street-Portland.jpg
  • Vegetation in this stormwater curb extension filters out pollutants in the stormwater before it soaks into the ground, naturally recharging groundwater.  Stormwater management facilities like this one are are also known as Green Street treatments.  NW 21st Avenue and Raleigh Street, Portland, Oregon.
    Green-Street-Planter-Grasses.jpg
  • A stormwater curb extension retrofit to an existing street on a slope (weirs).  Stormwater management facilities like this one are are also known as Green Street treatments.  East Burnside Street, Portland, Oregon.
    Stormwater-Curb-Extension-Storm.jpg
  • Dosing House and Gatehouse 5 at Reservoir 5, one of three open reservoirs at Mount Tabor Park and of five total in Portland.  The 3 open reservoirs in Mount Tabor Park, with their ancillary structures, were placed in the National Register of Historic Places on January 15, 2004.  Environmental Protection Agency (EPA) regulation: Long Term 2 Enhanced Surface Water Treatment Rule, referred to as the LT2 rule imposes new requirements that open water reservoirs be covered, buried or additionally treated.  This applies to Portland's five open reservoirs and to the unfiltered Bull Run source supplying them.
    9_September.jpg
  • Hundred-year-old water distribution control valves at Gatehouse 1, Reservoir 1, Mount Tabor Park, Portland.  Photo taken 28 March 2008.  Soon after this photo was taken, one valve was overhauled, one was replaced by a modern valve, and the platform was wrapped in a reinforced security cage, making this image impossible to repeat.  The image was made at night; the vavles illuminated with two lights, filtered with blue and orange gels respectively.
    4_April.jpg
  • Reservoir 6 headhouse, Mount Tabor Park,  Portland, Oregon, USA.
    Gatehouse 6, Mt Tabor Park.jpg
  • Detail in undulating rail wall, Tanner Springs Park, Portland, Oregon.  This park in the Pearl District of downtown Portland, Oregon is a modern-day experiment in sustainable design and stormwater management.  The water feature, designed by Herbert Dreiseitl is an effort to re-create the pre-industrial wetlands and riparian ecology of the original Tanner Creek that flowed to the nearby Willamette River in the early 1800s.  One sustainability feature of the park is the collection, treatment and recirculation of all rainwater that falls within the park.  Additional sustainability features include the re-use of basalt cobbles, or Belgian Blocks, for walkways and the re-use of rusty railroad rails for the undulating wall.
    Undulating Rail Wall Detail.jpg
  • Tanner Springs Park in the Pearl District of downtown Portland, Oregon is a modern-day experiment in sustainable design and stormwater management.  The water feature, designed by Herbert Dreiseitl is an effort to re-create the pre-industrial wetlands and riparian ecology of the original Tanner Creek that flowed to the nearby Willamette River in the early 1800s.  One sustainability feature of the park is the collection, treatment and recirculation of all rainwater that falls within the park.  Additional sustainability features include the re-use of basalt cobbles, or Belgian Blocks, for walkways and the re-use of rusty railroad rails for the undulating wall.
    Rainwater-Recirculation-Pond.jpg
  • Double-crested Cormorants (Phalacrocorax auritus) perch on a drowned tree near Obsidian Butte, Sonny Bono Salton Sea Wildlife Refuge (EL -227ft).  This habitat for migratory birds is located along the course of the Pacific Flyway in the Imperial Valley of California.  Flooding by the Salton Sea has reduced the manageable area from 36,700 acres to 2,200 acres.  Dykes (dikes) now limit further encroachment.
    Water Bird Habitat.jpg
  • A public-private stormwater management partnership (PPP) - the first of its kind in Portland.  Runoff from the public street flows into a treatment swale on private property, where vegetation filters out pollutants before it soaks into the ground, naturally recharging groundwater.  RiverEast Center Stormwater Management facility in Portland, Oregon.
    Public-Private-Partnership-Stormwate...jpg
  • Gatehouse 5 and reflections on Reservoir 5, with the City of Portland beyond.  This is one of three open reservoirs at Mount Tabor Park, and of five total in Portland.  The 3 open reservoirs in Mount Tabor Park, with their ancillary structures, were placed in the National Register of Historic Places on January 15, 2004.  Environmental Protection Agency (EPA) regulation: Long Term 2 Enhanced Surface Water Treatment Rule, referred to as the LT2 rule imposes new requirements that open water reservoirs be covered, buried or additionally treated.  This applies to Portland's five open reservoirs and to the unfiltered Bull Run source supplying them.
    11_November.jpg
  • Hand-painted canvases depicting salmon stretch as far as the eye can see along the banks of the Willamette River at the Oregon Trout Portland Triathlon, sponsored by The Freshwater Trust. Photo: 23 August 2009.  The Freshwater Trust is a not-for-profit organization that works to preserve and restore freshwater ecosystems through water health and fish recovery, under the Clean Water & Endangered Species Acts.
    AJH_090823_0423.jpg
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