Wetland monitoring reports

This page hosts five types of reports for compliance with permits and other reporting requirements.

  • Wetland monitoring reports are full-length reports discussing the development of individual wetland mitigation sites for federal, state, and local permit compliance. The permits require quantitative wetland monitoring reports for the years specified in the permit document.
  • Stream monitoring reports are similar to wetland reports, but discuss stream mitigation sites.
  • Mitigation bank monitoring reports are full-length reports discussing the development of mitigation banks for compliance with the Mitigation Bank Instrument (MBI). The MBI requires quantitative bank monitoring reports for specified years.
  • Letter reports are short reports when a full-length report is not required. These reports are typically qualitative.
  • Hydraulic project approval (HPA) monitoring reports are letter-format reports for compliance with HPA permits from the Washington State Department of Fish and Wildlife.

To find a report, browse the list of years and select your region. Use the WSDOT Regions Map (pdf 508 kb) to find the boundaries for regions and counties. Within regions, reports are organized by county, state route number and project name, permit number, and (link to the report).

2019 Reports

2018 Reports

2019 Reports

Eastern Region

Whitman County

SR 27 Pine Creek Br - Replace Bridge - NWS-2009-594 (Pine Creek) (1,028 kb)

North Central Region

Chelan County

US 2 Tumwater Canyon Bridge Replacement - NWS-2010-1255 (Tumwater Canyon) (1,575 kb)

Northwest Region

Island County

SR 532 Corridor Improvements - Design-Build - Davis Slough Bridge - NWS-2010-968-2 (Dugualla Bay) (3,436 kb)

King County

Springbrook Creek Wetland and Habitat Compensatory Mitigation Bank Unit C – 2006-00100 (3,389 kb)

I-5 SR 161-SR 18 Interchange Improvements - NWS-2009-181 (Corrington Wetland) (1,339 kb)

SR 99 West Fork Hylebos Creek - Fish Passage - NWS-2013-1269 (West Fork Hylebos Creek) (1,326 kb)

SR 167 High Occupancy Toll Lane Project – NWS-2008-1276 (Milwaukee Ditch and Site C) (2,923 kb)

I-405 Congestion Relief and Bus Rapid Transit Projects: Renton Nickel Improvement Project – 2006-00097 (Renton Stage 1) 2,455 kb)

SR 520/I-5 to Medina - NWS-2008-1246 (Bear Creek) (20,250 kb)

SR 520 I-5 to Medina Bridge Replacement and HOV Project - NWS-2011-376 (South Lake Washington) (1,349 kb)

SR 520 Medina to SR 202 - Eastside Transit and HOV - NWS-2009-562 (Yarrow Creek Streams) (12,223 kb)

Skagit County

SR 20 Fredonia to I-5 – NWS-2005-1406, Mt. Vernon Rail Siding Upgrade Project – NWS-2007-236 (Gages Slough) (3,023 kb)

Snohomish County

SR 9 212th St SE to 176th St SE Widening Stage 3 (MP 1.62 to 4.22) - NWS-2010-1228 (Charles E. Plummer) (1,698 kb)

Whatcom County

SR 539 Ten Mile Road to SR 546 – NWS-2007-470-SOD (Wiser Lake) (1,655 kb)

SR 542 Anderson Creek CED - WQC-NWS-2014-529 (Anderson Creek) (1,236 kb)

Olympic Region

Clallam County

US 101 Matriotti Creek Dish Barrier Removal – NWS-2015-161 (Matriotti Creek Culvert) (1,066 kb)

Grays Harbor County

SR 520 Pontoon Construction - NWS-2008-151 (Grass Creek) (3,327 kb)

Mason County

US 101 Purdy Canyon Vicinity Slide Slope Stabilization - NWS-2012-514 (Purdy Canyon Slide) (1,601 kb)

Pierce County

I-5 Portland Avenue to Port of Tacoma Road - NB HOV and Bridge - NWS-2011-061, I-5 Portland Avenue to Port of Tacoma Road - SW Outfall - NWS-2010-0278, I-5 Tacoma HOV Mitigation - Clear Creek Riverside Construction - NWS-2009-753 (Clear Creek Riverside) (4,222 kb)

SR 161 24th Street E to Milton Way - NWS-2009-1404 (Walker Pond) (1,670 kb)

SR 410 214th Avenue East to 234th Avenue East Widening - NWS-2009-280 (Fennel Creek 2) (3,283 kb)

Thurston County

SR 121 Bloom’s Ditch Fish Barrier Removal (MP 3.85-4.23) – NWS-2015-924-DOT (Bloom’s Ditch) (579 kb)

South Central Region

Kittitas County

I-90 Snoqualmie Pass East - NWS-2007-2080 (Stampede Pass) (1,917 kb)

Yakima County

SR 410 Nile Valley Landslide - Reconstruct Highway & Manage Env Mitigation - NWS-2010-511 (Nile Slide) (1,401 kb)

Southwest Region

Clark County

I-5 I-205 NE 134th Street IC - NWS-2010-185, SR 502 NE 15th Ave to NE 102nd Ave - NWS-2009-1093 (Cedars Wetland) (3,440 kb)

I-5 SR 502 Interchange – 2005-01249 (Johnson Farm and Gee Creek Riparian) (6,922 kb)

SR 501 Emergency Slide Repair MP 18.08 - NWS-2013-087 (Slide 3) (416 kb)

SR 502 NE 15th Ave to NE 102nd Ave – NWS-2009-1093 (Mill Creek North Buffer) (1,988 kb)

SR 502 NE 15th Ave to NE 102nd Ave – HAB2011-00031, WET2011-00033 (Mill Creek Riparian Buffers Reach 1 and Reach 2) (1,968 kb)

Cowlitz County

I-5 SR 432 Talley Way Interchange - NWS-2009-444 (Carrolls Creek) (2,351 kb)

Klickitat County

US 97 North of Goldendale Wildlife Habitat Connectivity/Fish Passage at Butler Creek - NWS-2011-00944 (Butler Creek) (1,272 kb)

SR 142 Klickitat River Overflow Bridge Replacement - NWS-2015-927-DOT (Klickitat River) (470 kb)

Lewis County

SR 6 Rock Creek Bridge Replacement - NWS-2012-350 (Rock Creek Bridge) (3,445 kb)

Pacific County

US 101 Bone River Bridge Replacement MP 45.08 to MP 45.32 - NWS-2009-01152 (Bone River Bridge) (829 kb)

US 101 Middle Nemah River Bridge Replacement MP 33.70 to MP 33.99 - NWS-2012-00134 (Middle Nemah Bridge) (1,545 kb)

Skamania County

SR 14 Cape Horn Bridge to Cape Horn Rd Vicinity (MP 25.50 to 26.50) - NWS-2009-1257 (St Cloud) (1,927 kb)

SR 14 Marble Road to Belle Center Safety Improvements - NWS-2011-544 (Cleveland Oak) (1,696 kb)

SR 14 Marble Road to Belle Center Safety Improvements - NWS-2011-544 (Homestead Lake) (3,269 kb)

SR 14 Marble Road to Belle Center Safety Improvements - NWS-2011-544 (Marble Road) (1,177 kb)

Thurston County

I-5 Blakeslee Junction to Grand Mound Interchange - NWS-2008-744 (Thurston Co) (TDA 11) (1,604 kb)

I-5 Blakeslee Junction to Grand Mound Interchange - NWS-2008-744 (Thurston Co) (TDA 12) (2,013 kb)

I-5 Blakeslee Junction to Grand Mound Interchange - NWS-2008-744 (Thurston Co) (TDA 13) (1,945 kb)

Wahkiakum County

SR 4 MP 19.82 Culvert Replacement – NWS-2017-143 (Klints Creek) (1,010 kb)

2018 Reports

Eastern Region

Spokane County

US 395 NSC - US 2 Lowering - Deadman Creek Fish Passage Culvert NWS-2008- 336 (Deadman Creek) (pdf 1.92 mb)

SR 270 Pullman to Idaho State Line  200500225 (Patterson Creek) (pdf 3.33 mb)

SR 270 Pullman to Idaho State Line  200500225 (Sunshine Road) (pdf 2.49 mb)

Northwest Region

King County

Springbrook Creek Wetland and Habitat Mitigation Bank 2006- 00100 (Springbrook Bank Units A_B) (pdf 4.41 mb)

Springbrook Creek Wetland and Habitat Mitigation Bank 2006-00100 (Springbrook Bank Unit C) (pdf 1.94 mb)

Springbrook Creek Wetland and Habitat Mitigation Bank  2006-00100 (Springbrook Bank Unit D) (pdf 771 kb)

Springbrook Creek Wetland and Habitat Mitigation Bank 2006-00100 Springbrook Bank Unit E) (pdf 567kb)

I-405 NE 6th St to I-5 Widening and Express Toll Lanes NWS-2007-1711 (Sammamish River, Stream C 28 & Yarrow Creek Farms) (pdf 2.30 mb)

I-405 SR 515 Interchange Project  NWS-2007-1788 (Thunder Hills Creek Tributary) (pdf 2.68 mb)

SR 520/I-5 to Medina NWS-2008-1246 (Bear Creek) (pdf 16.3 mb)

SR 520/I-5 to Medina NWS-2008-1246 (Temporary Impact, Foster Island, WSDOT Peninsula, East Montlake Shoreline) (pdf 1.98 mb)

SR 520/I-5 to Medina NWS-2008-1246 (East Approach) (pdf 1.62 mb)

SR 520/I-5 to Medina NWS-2008-1246 (Union Bay Natural Area) (1.59 mb)

SR 520 Medina to SR 202 - Eastside Transit and HOV  NWS-2009-562 (Evans Creek) (pdf 4.44 mb)

SR 520 Medina to SR 202 - Eastside Transit and HOV NWS-2009-562 (Yarrow Creek Wetland) (pdf 2.54 mb)

Skagit County

SR 20 Skagit River CED Permanent Restoration NWS-2010-783 (Skagit River CED) (pdf 1.41 mb)

Snohomish County

Skaglund Hill Vic to C-Post Rd Emergency Roadway Reconstruction Project NWS-2014-440 (Oso Wetland 12) (pdf 681 kb)

I-5 Everett HOV, SR 526 to SR 2 Vicinity  2004-01448 (Everett HOV) (pdf 5.34 mb)

 

Olympic Region 

Clallam County

US 101 Shore to Kitchen-Dick Rd Widening NWS-2009-556-DOT (Dungeness River) (pdf 1.3 mb)

Grays Harbor County

SR 520 Pontoon Construction  NWS-2008-151 (Grass Creek) (pdf 2.6 mb)

Pierce County

SR 3 303 Interchange  2005-00075 (Waaga Way) (pdf 2.0 mb)

I-5 Spring Valley Restoration 2006-00839, NWS-2008-1445 (Spring Valley) (pdf 7.94 mb)

I-5 M Street to Portland Ave HOV WET2013-40000196124 (Clear Creek Riverside) (610 kb)

South Central Region 

Benton County

SR 240 I-82 to Columbia Center Interchange 2004-00043 (Columbia Causeway) (pdf 4.36 mb)

Kittitas County

I-90 Snoqualmie Pass East NWS-2007-2080 (Gold Creek Bridges) (pdf 1.1 mb)

I-90 Snoqualmie Pass East NWS-2007-2080 (Gold Creek Stockpile) (pdf 2.46 b)

I-90 Snoqualmie Pass East NWS-2007-2080 (Keechelus Lake) (pdf 591 kb)

I-90 Snoqualmie Pass East NWS-2007-2080 (Resort Creek) (pdf 1.56 mb)

I-90 Snoqualmie Pass East  NWS-2007-2080 (Rocky Run Creek) (pdf 629 kb)

I-90 Snoqualmie Pass East NWS-2007-2080 (Sunset HWY) (pdf 1.75 mb)

I-90 Snoqualmie Pass East NWS-2007-2080 (Townsend Creek) (pdf 2.30 mb)

I-90 Snoqualmie Pass East  NWS-2007-2080 (Upper Keechelus Lake) (pdf 1.3 mb)

Southwest Region

Clark County

I-5 SR 501 Ridgefield Interchange NWS-2008-1303 (McCormick Creek) (pdf 756 kb)

SR 500 St Johns Blvd Interchange NWS-2009-1104 (Arnold Park) (pdf 564 kb)

SR 500 St Johns Blvd Interchange NWS-2009-1104 (Lower Burnt Bridge) (pdf 967 kb)

SR 501 Emergency Slope Repair MP 18.14 NWS-2013-087 (Slide 2) (pdf 230 kb)

SR 502 NE 15th Ave to NE 102nd Ave NWS-2009-1093 (Mill Creek Complex North) (pdf 948 kb)

SR 502 NE 15th Ave to NE 102nd Ave NWS-2009-1093 (Mill Creek Complex South) (pdf 1.1 mb)

SR 502 NE 15th Ave to NE 102nd Ave NWS-2009-1093 (Mill Creek North) (pdf 1.9 mb)

SR 502 NE 15th Ave to NE 102nd Ave NWS-2009-1093 (Sunset Oaks) (pdf 957 kb)

SR 503 Lewisville Park Vicinity Climbing Lane NWS-2008-704 (Climbing Lane) (pdf 1.5 mb)

Cowlitz County

I-5 SR 432 Talley Way Interchange NWS-2009-444 (Sandy Bend) (pdf 1.7 mb)

SR 504 1.3 Miles East of SR 505 Slope Stabilization NWS-2012-1295 (Toutle River Bank Repair) (pdf 348 kb)

Lewis County

North Fork Newaukum Mitigation Bank  2001-4-00182 (North Fork Newaukum) (pdf 1.0 mb)

I-5 Mellen to Blakeslee Junction NWS-2009-1211 (Airport Road) (pdf 569 kb)

I-5 Mellen to Blakeslee Junction NWS-2009-1211 (Berwick Creek) (pdf 199 kb)

I-5 Mellen to Blakeslee Junction NWS-2009-1211 (China Creek) (pdf 1.8 mb) 

I-5 Mellen to Blakeslee Junction NWS-2009-1211 (Horseshoe Lake) (pdf 717 kb)

SR 6 Rock Creek Bridge Replacement NWS-2012-350 (Rock Creek Bridge) (1.47 mb)

SR 7 Culvert Rehabilitation NWS-2017-132-DOT (Mineral Creek Culvert Rehabilitation) (pdf 617 kb)

US-12 Cowlitz Bank Repair  NWS-2013-801 (Cowlitz River Bank Repair) (pdf 717 kb)

Pacific County

Tarlatt Slough Mitigation Site  NWS-2009-048 (Tarlatt Slough) (pdf 1.7 mb)

SR 4 MP 3.1 Vicinity Culvert Replacement and Emergency Detour NWS-2015-127-DOT (Naselle Culvert) (pdf 322 kb)

SR 6 Willapa River Bridge Replacement  NWS-2012-743 (Willapa River Bridge) (pdf 329 kb)

SR 105 North Cove Vic/Washaway Beach Erosion Protection Project NWS-2016-236-DOT (North Cove) (pdf 1.31 mb)

SR 105 Smith Creek and North River Bridge Replacement NWS-2011-00645 (North River Bridge) (pdf 621 kb)

SR 105 Smith Creek and North River Bridge Replacement  NWS-2011-00645 (Smith Creek Bridge) (pdf 657 kb)

Skamania County

SR 14 Marble Road to Belle Center Safety Improvements NSA-11-33 (Cleveland Oak) (pdf 185 kb)

SR 14 Marble Road to Belle Center Safety Improvements NSA-11-33 (Homestead Lake) (pdf 163 kb)

SR 14 Marble Road to Belle Center Safety Improvements NSA-11-33 (Marble Road NSA) (pdf 170 kb)

Wahkiakum County

SR 4 Elochoman Vic. Culvert Replacements MP 33.84 to 34.19 NWS-2014- 082-DOT(Elochoman Culverts) (pdf 762 kb)