Reports on this web page are organized by their WSDOT region. To find out which WSDOT region your county is located in, view the WSDOT Regions Map (pdf 932 kb).

Four types of reports are listed on this web page:

• Hydraulic Project Approval (HPA) Monitoring Reports are letter-format reports for compliance with HPA permits from the Washington State Department of Fish and Wildlife.
• Off Year Monitoring Reports- Reports required by permits that do not follow the reporting and monitoring timeline required by the Mitigation Report.-
• Stream Monitoring Reports are similar to wetland reports, but discuss stream mitigation sites.
• Wetland Monitoring Reports are full-length reports discussing the development of individual wetland mitigation sites for permit compliance with regulatory and local agencies. Wetland reports are written during formal monitoring years with quantitative data.

All reports for 2011 through 2010 are listed below.

2011 Reports

Eastern Region

• SR 270 Pullman to Idaho State Line - Jorstad (pdf 1.47 mb)
• SR 270 Pullman to Idaho State Line - Patterson (pdf 804 kb)
• SR 270 Pullman to Idaho State Line - Sunshine Road (pdf 693 kb)

North Central

• US 2 Winton Road Project Mitigation Site (pdf 1.29 mb)
  

• Moses Lake Wetland Mitigation Bank (pdf 306 kb)

Northwest Region

• I-405/I-5 to SR169 Stage 1 Widening Stream Mitigation Site (Renton Stage 1) (pdf 1.6 mb)
• SR 20 Fredonia to I-5 (pdf 1 mb)
• SR 9, SR 522 to SR 524 Vicinity (Great Dane Creek) (pdf 271 kb)
• SR 18 Maple Valley to Issaquah-Hobart Road (Cedar River Crossing) (pdf 1.3 mb)
• SR 18 Maple Valley to Issaquah-Hobart Road (Taylor Creek 244th Ave Crossing) (pdf 579 kb)
• SR 18 Maple Valley to Issaquah-Hobart Road (Taylor Creek SE 215th Place) (pdf 278 kb)
• SR 18 Maple Valley to Issaquah-Hobart Road (Taylor Creek Crossing 1) (pdf 219 kb)
• SR 18 Maple Valley to Issaquah-Hobart Road (Taylor Creek Crossing 2) (pdf 411 kb)
• SR 18 Maple Valley to Issaquah-Hobart Road (Taylor Creek Crossing 3) (pdf 146 kb)
• SR 18 Maple Valley to Issaquah-Hobart Road (Taylor Creek Crossing 4) (pdf 242 kb)
• SR 20: Quiet Cove to SR 20 Spur Safety Mitigation Site (pdf 665 kb)
• SR 518 SeaTac Airport to I-5/I405 Interchange (Gilliam Creek) (pdf 1.7 mb)

• I-90 Seismic Retrofit (pdf 179 kb)
• I-405, SR 520 to SR 522 Stage 1 (Kirkland Stage 1) (Thrasher’s Corner) (pdf 1.10 mb)
• SR 5 Blaine Vicinity Ramps Mitigation Site (SR 5 H - Street Pit) (pdf 377 kb)
• SR 18, 180th Ave SE to Maple Valley Washington (Jenkins Creek Mitigation Site) (pdf 777 kb)
• SR 18 180th SE to Maple Valley (Kendal 2 and Wetland KA) (pdf 18 kb)
• SR 20 Campbell Lake Road (pdf 2.5 mb)
• SR 167 Stage 3 Wetland Mitigation Site (pdf 272 kb)
• I-405, SR 520 to SR 522 Stage 1 - Kirkland Stage 1 (Forbes Lake East) (pdf 1.14 mb)
• I-405, SR 520 to SR 522 Stage 1 - Kirkland Stage 1 (Forbes Lake West) (pdf 403 kb)
• Springbrook Creek Wetland and Habitat Mitigation Bank Unit C (pdf 326 kb)
• SR 202 Happy Valley Wetland Mitigation Site (pdf 1.57 mb)
• SR 522 Paradise Lake Road to Snohomish River Stage 2 and 4 - Northeast (pdf 712 kb)
• SR 530 Montague to Hazel Wetland Mitigation Site (Montague Creek) (pdf 1.04 mb)

• I-90 Sunset Interchange Retaining Wall 16 Mitigation Site (pdf 801 kb)
• SR 5 Everett Vicinity Bridges Seismic Retrofit Revegetation Site (pdf 3.42 mb)
• SR 5 Everett HOV, SR 526 to SR 2 Vicinity Mitigation Site (pdf 2 mb)
• SR 9: Nooksack Road Vicinity to Cherry Street All Weather (pdf 922 kb)
• SR 9 Nooksack Road Vicinity to Cherry Street All Weather Reconstruction (Bone Creek Culvert Replacement) (pdf 1.62 mb)
• SR 9 Nooksack Road Vicinity to Cherry Street All Weather Reconstruction (Bone Creek Realignment) (pdf 3.2 mb)
• SR 9 Nooksack Road Vicinity to Cherry Street All Weather Reconstruction (Johnson Creek)
• SR 9 Pilchuck River Mitigation Site USACE NWP (23) 2003-01338 (pdf 2.13 mb)
• SR 9 Pilchuck River Mitigation Site USACE NWP (23) 2004-00772 (pdf 2.12 mb)
• SR 9 Pilchuck River Mitigation Site USACE NWP (23) 2004-01475 (pdf 2.24 mb)
• SR 9 Schloman Road to 256th St NE & 268th St NE Intersection (pdf 1.64 mb)
• SR 9 Widening: SR 522 to 212th Street Stage 2 (Howell Creek Advanced) (pdf 928 kb)
• SR 9 Widening: SR 522 to 212th Street Stage 2 (Whistle Creek) (pdf 1.33 mb)
• SR 9 20th Street SE (Lake Stevens Stream Restoration) (pdf 1.34 mb)
• SR 9 176th Street SE to Marsh Road (pdf 647 kb)
• SR 18 Maple Valley to Issaquah-Hobart Road (SR 18 Cedar River Tributary SE 216th Place) (pdf 1.05 mb)
• SR 18 Maple Valley Issaquah-Hobart Road Site 1 (pdf 1.74 mb)
• SR 18 Maple Valley Issaquah-Hobart Road Site 2 (pdf 1.75 mb)
• SR 18 Maple Valley Issaquah-Hobart Road Site 3 (pdf 1.43 mb)
• SR 18 Maple Valley Issaquah-Hobart Road Site 4 (pdf 1.89 mb)
• SR 92 – SR 9 to 84th Street Channelization & Safety Improvements Advanced Mitigation Site (Blueberry Farm) (pdf 2.67 mb)
• SR 161 Milton Way to South 360th- Stage 2 (pdf 1 mb)
• SR164 I/C196th to Highpoint and SR 164 SE 392nd Street I/C(Ritter Property) 2004-01380 (pdf 1.89 mb)
• SR164 I/C196th to Highpoint and SR 164 SE 392nd Street I/C(Ritter Property) 2004-01525 (pdf 1.89 mb)
• SR 202 Improvement Project: SR 520 to Sahalee Way NE Wetland Mitigation Site #1 (Turple) (pdf 922 kb)
• SR 509/I-5 Freight and Congestion Relief Project (AMB Property) (pdf 2.9 mb)
• SR 520: West lake Sammamish Parkway to SR 202 Widening Mitigation Site (Bear Creek 3) (pdf 2.54 mb)
• SR 522 Paradise Lake Road to Snohomish River Stage 2 and 4 - Northwest (pdf 1.85 mb)
• SR 527 132nd St. SE to 112th St. SE Widening Shoreline Enhancement and Floodplain/Wetland Mitigation Sites (pdf 2 mb)
• SR 530 Arlington Heights Road Mitigation Site (pdf 1.46 mb)
• SR 530 Skaglund Hill Slide (pdf 711 kb)
• SR 532 Corridor Improvements Project (Estuarine) Wetland Mitigation Site (pdf 1.62 mb)
• SR 532 Corridor Improvements – Camano Island to I-5 SR 530/Skaglund Hill Slide Permanent Repair (Pilchuck Creek USACE NWP (14) 2010-773) (pdf 958 kb)
• SR 532 Corridor Improvements – Camano Island to I-5 SR 530/Skaglund Hill Slide Permanent Repair (Pilchuck Creek USACE NWP 2008-1081) (pdf 958 kb)
• SR 532 North Leque Island Slope Protection (pdf 733 kb)
• SR 543 I-5 to International Boundary Widening and Border Crossing (pdf 1.23 mb)
• SR 548: Terrell Creek-Major Drainage (pdf 622 kb)
• SR 900 78th Vicinity to Newport Way Widening Lake Sammamish State Park (LSSP) Wetland Mitigation Site and Tributary B Stream Mitigation Site (pdf 1.51 mb)
• SR 900 Newport Way to I-90 Widening (pdf 1.28 mb)
• Springbrook Creek Wetland and Habitat Mitigation Bank Unit A and B (pdf 2.44 mb)
• Springbrook Creek Wetland and Habitat Mitigation Bank Unit D (pdf 167 kb)
• Springbrook Creek Wetland and Habitat Mitigation Bank Unit E (pdf 958 kb)

Olympic Region

• US 101 Blyn Vicinity Passing Lanes (pdf 1.64 mb)
• SR 16 Union Avenue to Jackson Avenue HOV (Snake Lake) (pdf 579 kb)

• SR 16 Union Avenue to Jackson Avenue HOV (Leach Creek) (pdf 895 kb)
• US 101 Purdy Creek Bridge Replacement (pdf 1.11 mb)
• I-5 Scatter Creek and Maytown Safety Rest Areas and I-5 Grand Mound to Maytown Widening (pdf 1.11 mb)
• Spring Valley Restoration Project Advance Mitigation Site (pdf 4.65 kb)
• SR 16 West Bound Nalley Valley HOV (Tacoma Nature Center NWP (14) 2008-358) (pdf 1.11 mb)
• SR 16 West Bound Nalley Valley HOV (Tacoma Nature Center USACE 200301129) (pdf 1.11 mb)
• SR 3/303 Interchange (Waaga Way) (pdf 1.3 mb)

South Central Region

• US 12: SR 124 to Wallula Junction (McNary) (pdf 1.87 mb)
• SR 240 Yakima River Bridge Replacement (pdf 248 kb)

• SR 240/I-182 to Columbia Center Interchange (pdf 1.92 mb)
• US 12 Tieton River Bridges Replacement (pdf 695 kb)
• SR 24/I-82 to Keys Road (Yakima River Bridge) (pdf 453 kb)

Southwest Region

• I-5/SR 502 Interchange Project (pdf 322 kb)
• SR 501 MP 18.3 Landslide Repair (pdf 163 kb)
  

• I-5 Salmon Creek to I-205 (Burnt Bridge Creek NWP 1999-4-169) (pdf 262 kb)
• I-5 Salmon Creek to I-205 (Burnt Bridge Creek NWP 26: 93-4-00614) (pdf 458 kb)
• I-5 Salmon Creek to I-205 (Burnt Bridge Creek NWP 14: 2001-4-01406) (pdf 262 kb)
• SR 500 Thurston Way Interchange (pdf 382 kb)
• US 12 Peters Road Slide Repair 94-4-02046 (pdf 305 kb)
• US 12 Peters Road Slide Repair 96-4-01135 (pdf 330 kb)

• I-5 Salmon Creek to I-205 (Tenney Creek) (pdf 872 kb)
• SR 504 Maratta Creek Disposal Site (pdf 769 kb)
• North Fork Newaukum Mitigation Bank (pdf 1.34 mb)

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2010 Reports

Eastern Region

• SR 270 Pullman to Idaho State Line (pdf 421 kb)

North Central Region

• SR 20 Bannon Creek to Aenas Valley Road (SR 20 Bonaparte Creek) (pdf 176 kb)

• Moses Lake Wetland Mitigation Bank (pdf 363 kb)

Northwest Region

• I-5 Everett HOV, SR 526 to SR 2 Vicinity Mitigation Site (pdf 209 kb)
• I-405 SR 522 to SR 520 Kirkland Nickel Project (pdf 277 kb)
• SR 9, SR 522 to SR 524 Vicinity (Great Dane Creek) (pdf 86 kb)
• SR 9 Schloman Road to 256th St NE & 268th St NE Intersection (pdf 232 kb)
• SR 18 Maple Valley to Issaquah-Hobart Road (Cedar River Crossing) (pdf 172 kb)
• SR 18 Maple Valley to Issaquah-Hobart Road (Taylor Creek 244th Ave Crossing) (pdf 102 kb)
• SR 18 Maple Valley to Issaquah-Hobart Road (Taylor Creek SE 215th Place) (pdf 156 kb)
• SR 18 Maple Valley to Issaquah-Hobart Road (Taylor Creek Crossing 1) (pdf 202 kb)
• SR 18 Maple Valley to Issaquah-Hobart Road (Taylor Creek Crossing 2) (pdf 169 kb)
• SR 18 Maple Valley to Issaquah-Hobart Road (Taylor Creek Crossing 3) (pdf 182 kb)
• SR 18 Maple Valley to Issaquah-Hobart Road (Taylor Creek Crossing 4) (pdf 145 kb)
• SR 202 Improvement Project: SR 520 to Sahalee Way (pdf 436 kb)
• SR 539 Widening Project: Horton Road to Tenmile Road (Larson Road) (pdf 190 kb)

• I-90 Sunset Interchange Retaining Wall 16 Mitigation Site (pdf 150 kb)
• Springbrook Creek Wetland and Habitat Mitigation Bank Unit A and B (pdf 163 kb)
• Springbrook Creek Wetland and Habitat Mitigation Bank Unit D (pdf 86 kb)
• Springbrook Creek Wetland and Habitat Mitigation Bank Unit E (pdf 360 kb)
• SR 9 Widening: SR 522 to 212th Street Stage 2 (Whistle Creek) (pdf 502 kb)
• SR 20 Oak Harbor to Frostad Road Mitigation Site 2005-00305 (pdf 183 kb)
• SR 20 Oak Harbor to Frostad Road Mitigation Site 2004-01209 (pdf 183 kb)
• SR 20 Oak Harbor to Frostad Road Mitigation Site 2004-00078 (pdf 183 kb)
• SR 20 Oak Harbor to Frostad Road Mitigation Site 200300735 (pdf 183 kb)
• SR 164 - SE 368th Place & 158th Avenue SE (Bass Lake 2) (pdf 326 kb)
• SR164 I/C196th to Highpoint and SR 164 SE 392nd Street I/C(Ritter Property) 2004-01380 (pdf 196 kb)
• SR 164 I/C 196th to Highpoint and SR 164 SE 392nd Street I/C (Ritter Property) 2004-01525 (pdf 196 kb)
• SR 202 Improvement Project: SR 520 to Sahalee Way NE Wetland Mitigation Site #1 (Turple) (pdf 292 kb)
• SR 509/I-5 Freight and Congestion Relief Project (AMB Property) (pdf 687 kb)
• SR 522 Paradise Lake Road to Snohomish River Stage 2 and 4 - Northeast (pdf 291 kb)

• SR 9: Nooksack Road Vicinity to Cherry Street All Weather (pdf 947 kb)

• I-5/SR 532 Interchange Improvements (Stanwood) (pdf 881 kb)
• I-90 Seismic Retrofit (pdf 354 kb)
• I-405, SR 520 to SR 522 Stage 1 - Kirkland Stage 1 (Thrasher’s Corner) (pdf 628 kb)
• I-405, SR 520 to SR 522 Stage 1 - Kirkland Stage 1 (Forbes Lake East) (pdf 656 kb)
• I-405, SR 520 to SR 522 Stage 1 - Kirkland Stage 1 (Forbes Lake West) (pdf 732 kb)
• I-405 Kelsey Creek Wetland Mitigation Site NWS-2009396 (pdf 644 kb)
• I-405 Kelsey Creek Wetland Mitigation Site 200501405 (pdf 630 kb)
• I-405 Kelsey Creek Wetland Mitigation Site 200501405 - Amended (pdf 645 kb)
• I-405 Kelsey Creek Wetland Mitigation Site 200600524 (pdf 626 kb)
• I-405 Kelsey Creek Wetland Mitigation Site 200600524 - Amended (pdf 645 kb)
• I-405/I-5 to SR169 Stage 1 Widening Stream - Renton Stage 1 (pdf 813 kb)
• Springbrook Creek Wetland and Habitat Mitigation Bank Unit C Amended 4/1/2011 (pdf 870 kb)
• Springbrook Creek Wetland and Habitat Mitigation Bank Unit C(pdf 1.04 mb)
• SR 18: 180th Avenue SE to Maple Valley (Jenkins Creek) Mitigation Site (pdf 905 kb)
• SR 18: 180th Avenue SE to Maple Valley (Kendal 2) (pdf 636 kb)
• SR 18: 180th Avenue SE to Maple Valley (Wetland KA) (pdf 443 kb)
• SR 18 180th Avenue to Maple Valley Wetland KA (Wetland Delineation Report) (pdf 905 kb)
• SR 18 Maple Valley to Issaquah-Hobart Road (SR 18 Cedar River Tributary SE 216th Place) (pdf 465 kb)
• SR 20 Fredonia to I-5 Mitigation Site 98-2005-1406-SOD (pdf 481 kb)
• SR 20 Mt. Vernon Rail Siding Upgrade Project 2007-236-SOD (pdf 477 kb)
• SR 167 Stage 3 Wetland Mitigation Site (pdf 664 kb)
• SR 203 Novelty Hill Road/NE 124th St. Vicinity Roundabout (pdf 1.17 mb)
• SR 518 Sea Tac Airport to I-5/I-405 Interchange Stream (Gilliam Creek) (pdf 505 kb)
• SR 525, SR 99 I/C Joint Wetland (Lincoln Way) 98-4-02126 (pdf 624 kb)
• SR 525, SR 99 I/C Joint Wetland (Lincoln Way) 2009-1278 (pdf 623 kb)
• SR 525, SR 99 I/C Joint Wetland (Lincoln Way) 1999-4-00222 (pdf 624 kb)
• SR 525, SR 99 I/C Joint Wetland (Lincoln Way) 2000-4-01504 (pdf 625 kb)
• SR 525, SR 99 I/C Joint Wetland (Manor Way) 98402126 (pdf 591 kb)
• SR 525, SR 99 I/C Joint Wetland (Manor Way) 2000401504 (pdf 591 kb)
• SR 525, SR 99 I/C Joint Wetland (Manor Way) 1999400222 (pdf 591 kb)
• SR 539 Potter Road Mitigation Site 2009-786 (pdf 578 kb)
• SR 539 Potter Road Mitigation Site 2007-470-SOD (pdf 578 kb)
• SR 539 Potter Road Mitigation Site 200500927 (pdf 578 kb)
• SR 20: Quiet Cove to SR 20 Spur Safety Mitigation Site 200601135 (pdf 487 kb)
• SR 20: Quiet Cove to SR 20 Spur Safety Mitigation Site 2008-460-SOD (pdf 487 kb)
• SR 202 Improvement Project: SR 520 to Sahalee Way NE Site #2 (pdf 1.42 mb)
• SR 539: Tenmile Road to Badger Road (SR 546) Widening (Wiser Lake) (pdf 568 kb)
• SR 539 Widening Project: Horton Road to Tenmile Road (Strand Road) (pdf 529 kb)

Olympic Region

• US 101 Blyn Vicinity Passing Lanes (pdf 321 kb)

• I-5 Scatter Creek and Maytown Safety Rest Areas (pdf 425 kb)
• SR 16 Union Ave to Jackson Avenue HOV (Snake Lake) (pdf 307 kb)

• SR 3 Crestview Drive, Road Improvement Project & Deer Creek Vicinity Traffic Channelization (pdf 496 kb)
• SR 161 234th Street East to 176th Street East (Graham Hill) (pdf 612 kb)
• SR 167 North Sumner Interchange (pdf 952 kb)
• SR 305 Vicinity Poulsbo South City Limits to Bond Road (Stream Realignment and Wall 8) (pdf 539 kb)
• SR 305 Vicinity Poulsbo South City Limits to Bond Road (SR 305 Poulsbo and Wall 10) (pdf 1.34 mb)
• US 101 Jimmycomelately Estuary (Eng Property) (pdf 862 kb)
• US 101 Sequim Bypass Corridor MP 262.34 to 267.43(pdf 327 kb)

Southwest Region

• I-5 Salmon Creek to I-205 (Tenney Creek) (pdf 110 kb)
• SR 14 Woodard Creek Bank Protection (pdf 150 kb)
• SR 501 MP 18.3 Landslide Repair
(pdf 136 kb)

• I-5/SR 502 Interchange Mitigation Site (pdf 1.40 mb)
• North Fork Newaukum Mitigation Bank (pdf 1.52 mb)
• North Fork Newaukum Mitigation Bank - Amended 4/5/2011 (1.52 mb)
• SR 6 South Fork Chehalis River Bridge Replacement Project (pdf 901 kb)
• SR 103 Pedestrian Path Project (Hines Marsh) Wetland (pdf 175 kb)
• SR 142 Bowman Creek Fish Passage Barrier Removal (pdf 498 kb)
• SR 500 Thurston Way Interchange Wetland (pdf 397 kb)
• SR 500/ I-205 Interchange Improvements (Burnt Bridge East) (pdf 348 kb)
• US 101/Sandridge Road-Safety Improvement Project (Hines Marsh) Wetland (pdf 158 kb)

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