| Title (link to summary) |
Number |
Date (released or updated) |
| History of Mercury in Selected Washington Lakes Determined from Age-Dated Sediment Cores: 2007 Sampling Results | 08-03-012 | May 2008 |
| Condition of Outer Coastal Estuaries of Washington State, 1999 - A Statistical Summary | 07-03-012 | March 2007 |
| Measuring Mercury Trends in Freshwater Fish in Washington State: 2005 Sampling Results | 07-03-007 | February 2007 |
| Progress on Watershed Planning and Setting Instream Flows | 05-11-038 | December 2005 |
| Small Business Economic Impact Statement: Proposed Columbia River Water Management Program Rule | 04-11-028 | December 2004 |
| Results and Recommendations from Monitoring Arsenic Levels in 303(d) Listed Rivers in Washington | 02-03-045 | October 2002 |
| Second Screening Investigation of Water and Sediment Quality of Creeks in Ten Washington Mining Districts, with Emphasis on Metals | 02-03-024 | June 2002 |
| River and Stream Ambient Monitoring Report for Water Year 2000 | 01-03-042 | December 2001 |
| River and Stream Ambient Monitoring Report for Water Year 1997 | 99-332 | August 1999 |
| Aquatic Plants Technical Assistance Program 1998 Activity Report | 99-328 | June 1999 |
| Washougal River Fish Habitat Analysis Using the Instream Flow Incremental Methodology and the Toe-Width Method for WRIAs 25, 26, 28, and 29 | 99-153 | June 1999 |
| River and Stream Ambient Monitoring Report for Wateryear 1996 | 98-317 | June 1998 |
| Washington State Pesticide Monitoring Program: 1995 Surface Water Sampling Report | 98-300 | 1998 |
| River and Stream Ambient Monitoring Report for Wateryear 1995 | 96-355 | December 1996 |
| Watershed Briefing Paper for the Lower Columbia Basin Watershed | 96-338 | September 1996 |
| Aquatic Plants Technical Assistance Program 1995 Activity Report | 96-332 | July 1996 |
| Lake Water Quality Assessment Program, 1993 | 96-304 | 1996 |
| River and Stream Ambient Monitoring Report for Wateryear 1994 | 95-349 | September 1995 |
| Metals Concentrations in Rivers and Streams Dropped from the 1994 Section 303(d) List | 95-352 | September 1995 |
| 1995 Ambient Biological Assessment Monitoring Implementation Plan | 95-343 | August 1995 |
| Aquatic Plants Technical Assistance 1994 Activity Report | 95-331 | June 1995 |
| 1994 Statewide Water Quality Assessment Lakes Chapter - Companion Document to WA State 305(b) | 95-311 | February 1995 |
| River and Stream Ambient Monitoring Report for Wateryear 1993 | 94-158 | September 1994 |
| Instream Biological Assessment Monitoring Protocols: Benthic Macroinvertebrates | 94-113 | June 1994 |
| Effectiveness of Forest Road and Timber Harvest Best Management Practices with Respect to Sediment-Related Water Quality Impacts, Interim Report No. 2 | 94-67 | May 1994 |
| Freshwater Ambient Monitoring Report for Wateryear 1992 | 94-70 | May 1994 |
| Status of the Water Supply at the Department of Wildlife's Green River Rearing Ponds, Near Kanasket, Washington | OFTR 94-06 | 1994 |
| Effectiveness of Best Management Practices for Aerial Application of Forest Pesticides | 93-81 | October 1993 |
| Freshwater Ambient Monitoring Report for Wateryear 1991 | 93-75 | September 1993 |
| Effectiveness of Forest Road and Timber Harvest Best Management Practices with Respect to Sediment-Related Water Quality Impacts, Interim Report No. 1 | 94-27 | June 1993 |
| Effectiveness of Forest Road and Timber Harvest Best Management Practices with Respect to Sediment-related Water Quality Impacts, Progress Report | 92-e55 | October 1992 |
| Lake Water Quality Assessment Project, 1989 | 91-60 | November 1991 |
| Quality of Salmonid Hatchery Effluents during a Summer Low-Flow Season. Article in Transactions of the American Fisheries Society 120:43-51, 1991. | 91-e32 | 1991 |
| Water Quality Survey of 25 Citizen-Volunteer Lakes from Washington State | 90-e03 | March 1990 |
| Green River Fish Habitat Analysis Using the Instream Flow Incremental Methodology | 89-035 | July 1989 |
| Quality and Fate of Fish Hatchery Effluents During the Summer Low Flow Season | 89-17 | 1989 |
| State Water Program: Columbia River Instream Resource Protection Program | 80-11-004 | June 1980 |
| Ostrander Creek - Woodbrook Lagoon Survey. Memo to Gerry Calkins. | 77-e26 | April 1977 |
| Effects of Receiving Waters of Wastes Discharged from Three Sewage Treatment Plants in Southwest Washington | 77-6 | 1977 |
| Toledo Lagoon. Memo to Vern Meinz. | 75-e12 | February 1975 |
| Efficiency Study at Winlock STP. Memo to Gerry Calkins and Howard Steeley. | 75-e04 | 1975 |
| Efficiency Study at Woodbrook Lagoon. Memo to Gerry Calkins and Howard Steeley. | 75-e05 | 1975 |
| Ryderwood STP Efficiency Study. Memo to Gerry Calkins. | 75-e35 | 1975 |
| Kelso Water Treatment Plant. Memo to Gerry Calkins. | 75-e39 | 1975 |
| Longview Water Treatment Plant. Memo to Gerry Calkins. | 75-e40 | 1975 |
| Shakertown Corporation, Winlock, Washington. Memo to Bob Bottman. | 75-e42 | 1975 |
| STP Survey at Vader Sewage Lagoon. Memo to Gerry Calkins. | 75-e43 | 1975 |
| Castle Rock STP Efficiency Study. Memo to Gerry Calkins | 75-e44 | 1975 |
| Shakertown Corporation at Winlock. Memo to Vern Meinz. | 74-e75 | December 1974 |
| U.S. Plywood at Morton. Memo to Vern Meinz. | 74-e76 | December 1974 |
| Cowlitz Stud Company at Randle. Memo to Vern Meinz. | 74-e77 | December 1974 |
| Efficiency Study at Winlock STP. Memo to Gerry Calkins and Howard Steeley. | 74-e72 | April 1974 |
| Efficiency Study of Vader Sewage Lagoon. Memo to Howard Steeley and Gerry Calkins. | 74-e16 | March 1974 |
| Efficiency Study of Toledo Sewage Lagoon. Memo to Howard Steeley, Gerry Calkins March 14, 1974. | 74-e19 | March 1974 |
| Silver Lake - Problem Status. Memo to Wes Hunter through John R. Raymond. | 73-e83 | December 1973 |
| Castle Rock Sewage Treatment Plant Survey. Memo to Gerry Calkins | 73-e56 | December 1973 |
| Kelso STP Efficiency Survey. Memo to Howard Steeley and Gerry Calkins. | 73-e28 | November 1973 |
| Morton Sewage Treatment Plant. Memo to Mike Price, Ron Robinson, Ron Devitt, Ron Pine | 73-e25 | October 1973 |
| Mossyrock Lagoon Efficiency Study. STP Report Form. | 71-e06 | October 1971 |
