King County, Washington
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Bear Creek Basin Plan (Adopted 1992) A 115-page document plus ordinance 10513 that presents the surface water management plan for the Bear Creek Watershed. This document was jointly funded and developed by King County, Snohomish County, and the City of Redmond from 1987 to 1990. It contains land use recommendations, regulations, capital projects, and programs to reduce and prevent flooding, erosion, and preserve salmonid habitat in the 50-square-mile Bear Creek Basin.
Best Management Practicies for Golf Courses
Bear Creek Current & Future Conditions Analysis A 150+ page report documenting the technical and professional analysis upon which the Bear Creek Basin Plan is founded. This includes land use, hydrology, geology, stream channel characteristics, stream habitat and water quality analyses.
Beaver Lake Management Plan & Technical Appendices, Nov. 1993 From Phase I Centennial Clean Water Fund Management Plan which describes: the study area, project methods, existing water quality of the lake, modeling analysis, and lake and watershed management recommendations needed to preserve lake water quality. Appendices contain background materials used to develop the Plan.
Beaver Lake Mangement Plan & Technical Appendices, 1996 - 2000
Biofilteration System For Storm Water Quality Control
Boeing Creek/Shoreview Park Northpond FEIS, 1990 This document covers the proposed construction of a detention pond in an undeveloped area of Shoreview Park. The pond will intercept storm water of the N. Tributary & S. Tributary of Boeing Creek, and release it at a rate that will substantially reduce erosion of the creek beds and banks. The detention pond will provide storm water storage needed to alleviate serious upstream flooding. The pond area will be dry most of the time and it is designed to be used for passive recreation. A deep & hazardous gully in the park will be filled to eliminate a safety hazard and provide more recreational space.
Ceder River Basin & Nonpoint Action Plan (Adopted 1997) This plan recommends over 150 projects and programs to reduce flood hazards, protect key salmon habitat and restore damaged conditions, while improving water quality. The first copy is free.
Ceder River Current & Future Conditions Report This November, 1993 report describes the conditions in the tributary and mainstem systems of the 66-square-mile BPA through several disciplinary perspectives. These disciplines include geology and groundwater, hydrology, erosion and deposition, water quality, aquatic habitat, and the public & governmental forces affecting the basin's resources. Conditions are discussed from basinwide and subbasin points of view.
Ceder River Current & Future Conditions Summary Report Ceder River Enviromental Impact Statement (February , 1995 Draft) Channel Migration In The Three-Forks Area of the Snoqualmie River Historic limits and rates of channel migration, estimation of probable future limits, and maps depicting channel migration hazard zones.
Characteristics Of The Low-Elevation Sphagnum-Dominate Peatlands of Wester Washington: A Community Profile
CIP Managment System Reference Manual Covers the Capital Improvement Program process: project management, scheduling, budget process, design, SEPA & permitting, construction, monitoring, & public involvement. Volumes 2 & 3 are appendices depicting completed forms, samples of reports, accounting tracking systems, property easements, and other often-used forms.
Coal Creek Basin Plan And FEIS (Adpted 1987) A 200+ page document that presents the existing conditions, problems, alternative solutions to the surface water management problems in the Coal Creek Basin.
Covington Master Drainage Plan Volume I (Adopted 1991)
Covington Master Drainage Plan Volume II
Critical Drainage Area Public Rules The plan recommends watershed management measures to protect resources and respond to increasing hazards & property damage in Des Moines creek basins from rapid urbanization.
Design Manual Does not include the hydrologic/hydraulic models required on some projects. See the King County Runoff Time series for the related computer models. Supporting documentation for the manual can be found at http://dnr.metrokc.gov/wlr/dss/manual.htm
2005 Surface Water Design Manual (SWDM) - Appendix C
2005 Surface Water Design Manual - Appendix D
East Lake Sammamish Conditions Report This report assesses surface water problems and the overall conditions of streams, lakes, and wetlands in the ELS basin. It also predicts how these conditions will change as the basin develops. The information from the report was used to provide input for the development of a comprehensive basin management plan. Aquatic resources are in fair to good condition, but are beginning to experience great change as a result of land-use changes from small farms and low-density residential uses to suburban and urban densities. These changes include increases in stream flows, and human alteration of streams, wetlands and their vegetated corridors. The effects of these changes include localized flooding, decreased water quality, erosion of stream channels and steep slopes, and loss of fish & wildlife habitat.
Final East Lake Sammamish Basin & Nonpoint Action Plan, December, 1994 This plan evaluates the water quality, aquatic resources, and surface water problems of the ELS Basin under past, current, and future conditions. It also defines a comprehensive surface water management program. The plan combines a county-funded basin plan and state-funded nonpoint action plan. Both basinwide and subbasin management recommendations are contained in the plan. These include: (1) regulatory controls focusing on improved onsite retention/detention, improved water quality control, and requirements for subcatchment areas that drain to significant wetlands, (2) capital improvement projects to reduce water pollution, flooding and erosion, and repair damage to aquatic habitat, and (3) education, evaluation, and monitoring programs.
Eastern Tributaries of the Lower Green River Enhanced Reconnaissance Report
Evaluation of commercially Available Catch Basin Inserts For The Treatment Of Stormwater Runoff From Developed Sites Growning concern over the impact of pollutants that are washed from paved areas in the urban environment has prompted regulatory agencies to examine new methods of stormwater treatment. The private sector recognizes the need to develop products that will help reduce water pollution problems. Among these products are devices designed to fit beneath storm drain inlets and remove pollutants from stormwater runoff. These devices are commonly referred to as catch basin inserts.
Evaluation of Water Quality Ponds & Swales In The Issaquah/Easst Lake Sammamish Basins Originally conceived as a pair of inflow/outflow performance evaluations of two wetponds, the focus of the project expanded from the quantification of removal efficiencies of wetponds, to include the documentation of the overall status of wetponds and biofiltration swales.
Flood Control Project - Snoqualmie River
Flood Hazard Reduction Plan Final This Nov. 1993 plan analyzes flooding problems and potential solutions along the six major rivers that flow through King County: the Skykomish, Snoqualmie, Cedar, Sammamish, Green, and White. To address flooding problems, this plan includes: (1) policies to guide floodplain land use & flood control activities, (2) program & project recommendations, including CIP's, maintenance, relocation and elevation of homes, and flood warning improvements & river planning activities, (3) implementation priorities for program & project recommendations, and (4) an analysis of major financial alternatives and issues.
Flood Hazard Reduction Plan Appendix B Problem Sites & Project Recommendations This January 1993 appendix represents an assessment of problems and the related project needs for the reduction of riverine flood hazards in King County. It is based primarily upon observations logged after the 1990 floods filled local river valleys in ways never before recorded. These extreme events set new flow records at six gage stations on five rivers & demonstrated clearly the severe flood hazards faced by King County.
Green-Duwamish and Puget Sound )Water Resource Inventory Area 9) Habitat Limiting Factors And Reconnaissance Assessment Report The WRIA 9 Habitat Limiting Factors and Reconnaissance Assessment Report covers both the Green/Duwamish River Watershed and the Central Puget Sound Watershed (including Vashon/Maury Islands). It gathers in one place existing information as of 2000 on the past, present, and likely future conditions of salmon and salmon habitat. It includes detailed fish distribution maps. It describes factors of salmon decline such as hydrology, sediment transport, hydromodification (changes to the river channel), riparian (streamside) condition, fish passage, and non-native species. This is a large, two-volume report. A free CD-ROM of the report may be requested from the Washington Conservation Commission at (360) 407-6200. Pdf versions can be downloaded via the Internet from: www.govlink.org/watersheds/9/reports/. Hard copies are available through the Seattle Public Library and King County Library systems. Hard copies for purchase are available from the South Center Kinko's in Tukwila at (206) 244-8884. The cost for the entire report is $177; call in advance. The WRIA 9 website is at: www.govlink.org/watersheds/9/. Green River Channel Migration Study In order to regulate development in hazardous zones along rapidly migrating rivers, the KCFHRP recommended conducting channel migration studies and hazard mapping along these rivers. This report includes determination of historic limits and rates of channel migration, estimation of probable future limits of channel migration, and development of maps that show channel migration hazard zones along the Green River.
Guidlines For Bank Stabilization Projects This document has been developed to assist scientists and engineers with the planning and design of bank stabilization projects. It presents information on bank erosion and stabilization techniques for large river systems. This is a practical guide for assessing erosion problems and evaluating alternative solutions.
Guidelines Conditions Report
Hydroligical Monitoring Report Volume One ONE (Data For Water Years 1988-1994) This report documents rainfall and streamflow data to support hydrologic modeling in the Basin Planning Unit of King County Surface Water Managment. It also includes the collection of water quality samples and the storage of water quality data for SWM and acquires other data sets from other sources for SWM use.
Hylebos Creek & Lower Puget sound Executive Proposed Basin Plan (Adopted 1994) The Plan assesses the condition of aquatic systems in these basins today & predicts future changes based on development patterns. It recommends a variety of management tools that, when fully implemented, will result in long-term stability and protection of significant beneficial uses in the aquatic systems. The two basins cover 35 miles of streams, 11 named lakes, and numerous wetlands.
Hylebos Creek Report
Issaquah Creek Current & Future Conditions Report The report assesses current & future problems in the planning area's streams, wetlands, and, to a lesser extent, lakes. The report also predicts how surface water conditions may change in the planning area as changes in land use occur, particularly if those changes are allowed to take place in the absence of corrective actions.
Issaquah Creek Basin & Nonpoint Action Plan & APPENDIX (Adopted 1995) There are two overall goals for the Issaquah Creek Basin & Nonpoint Action Plan: (1) protect the public health & safety from hazardous conditions related to surface water in the basin, and (2) protect the quality of the exceptional natural resources of Issaquah Creek and its tributaries. The appendix includes hydrologic data and public comments.
KCRTS Software KCRTS is King County’s hydrologic design software. This program is used for the design of stormwater facilities as required under the King County Surface Water Design Manual. The software is contained on a CD and also comes with a hard copy of the Computer Software Reference Manual.
King County Lake volunteer Monitoring Report
King County Lake Water Quality: A Trend Report On King County Small Lakes This document reports the results of a statistical trend analysis on 23 of the 51 lakes that have databases of samples collected by volunteers for the Lake Stewardship Program. Data collected from lakes that did not meet the criteria for trend analysis are also reported and discussed. Both sets of data are analyzed with reference to future stewardship activities and a discussion of general suggestions for further action is also included. Publication date: November 2001
Kink County Runoff Time Serices (KCRTS) Update Packet KCRTS Computer Software Reference Manual (workbooks) purchased prior to 1999 can be updated, rather than purchasing a new workbook. The update packet includes replacement workbook pages and CD-ROM. Note: If the workbook contains a blue CD-ROM, and/or the title page is dated 1999 then the workbook contains the latest updates.
King County Stormwater Managment Program 1996-2000 This document was created in partial fulfillment of our National Pollutant Discharge Elimination System (NPDES) Municipal Stormwater General Permit. It describes King County's stormwater management program, including watershed management, CIP, operation and maintenance, regulations, public involvement and education, and monitoring and evaluation.
Lake Desire Mgmt. Plan, April, 1995 + Background and Technical Reports, Dec, 1994 This document describes the Phase I Centennial Clean Water Fund management plan that was developed for Lake Desire. The plan describes the study area, project methods, existing water quality of the lake, modeling analysis, and lake and watershed management recommendations needed to improve lake water quality. The Technical Reports contains twelve background materials which were used in the development of the project plan.
Lake Sammamish Water Quality Management Plan
Lake Sawyer Managment Plan
Lake Sawyer Mangement Plan - Appendices
Lake Twelve Mangement Plan (Final Report) This May, 1994 report covers a small, shallow lake 1 mi. NE of Black Diamond. The Plan recommends restoration & watershed management measures to improve and prevent further degradation of the lake ecosystem and the beneficial uses it supports.
Master Drainage Pland And Large Site Development
May Creek Basin Action Plan
May Creek Current & Future Conditions Report This report provides a comprehensive assessment of the current conditions and preducts future trends in the May Creek Basin. Its primary purposes are to identify significant conditions and aissues to be addressed in the May Creek Basin Plan, and to serve as a resource for future agency actions.
McAleer Creek Drainage Improvement Project FEIS To control and manage excess storm flows, the proposed action involves the installation of a high-flow diversion structure on the downstream end of the Bothell Way stream crossing. This will divert high flows into a 42" diameter pipeline. Enlarging the stream channel through private property is also recommended. The total project cost estimate is $1 million.
Miller Creek Basin Reconnaissance Report #4
Miller Creek Water Quality Mangement Plan This plan, which covers 22 sq. miles of SW King County, recommends watershed management actions to improve water quality and protect aquatic resources. The most serious problems in Mill Creek include: A dissolved oxygen depression from river mile 3.3 to 5.6, Stream channel erosion & sediment deposition in Peasley Canyon, and high summer water temperatures. Capital improvements projects are recommended to control sources of pollution, reduce nonpoint pollution loadings, reduce peak flows and flooding, and implement best management practices. A public involvement and education program and monitoring element are also recommended basin-wide.
Modifications To The Santa Barbara Urban Hydrograph Method To Improve Detention Pond Performance This report documents the performances of detention ponds designed according to the methods in the 1990 King County Surface Water Design Manual using a continuous hydrologic model. Modifications to the design methodology are proposed to improve the performance of the ponds. These modifications include utilizing a 7-day design storm instead of a 24-hour storm currently required and an additional time of concentration parameter which produces runoff estimates that are more representative of the conditions in the Puget Sound area.
Monitoring Wetlands
King County Ordinances 7590 (1986, SWM Program)
8506 (12/91, Growth Management Act)
9163 (1989, SWM Design Manual)
9614 (1990, Sensitive Areas Ordinance)
10187 (1991, Expanded SWM Program & Service Charge)
10293 (3/92, Covington Master Drainage Plan)
11112 (1993, KC Flood Hazard Reduction Plan)
91-130 (2/91 Draft of Strategic Plan)
King County Code 9.12 (12/92, Water Pollution)
King County Code 9.08 (12/91, SWM Program)
Patterson Creek Basin Reconnaissance Report
Redional Needs Assessment (RNA) Atlas Reconnaissance Reports (Individual Reports) These reports describe land use, geology, and stream habitat conditions in the 30 stream basins encompassed within the King County Surface Water Management Service Area. The field work was done in 1986-7 and the report was finalized in late 1987.
Reconnaissance Report (Enhanced) For Green River Eastern Trib of Lower Green
Sammamish River Corridor Conditions & Enhancement Opportunities This document describes opportunties intended primarily to improve fisheries habitat & create linkages between an existing trail system and the river while preserving current levels of flood protection.
Sediment Transport Along The S. Fork & Main Stem Of The Snoqualmie This document analyzes the movement of coarse sediment along the Snoqualmie River, from North Bend, downstream to the confluence with the Skykomish River. The results are based on a combination of field sediment samples, gauged flow records, flood studies of the river, and theoretical sediment transport models. It also analyzes the value of dredging as a flood control strategy.
Sensitive Areas Map Folio Not available at SWM but at the above department.
Soos Creek Basin Plan The plan recommends watershed management measures to protect resources and respond to increasing hazards & property damage in Soos, Jenkins, & Covington Creek Basins from rapid urbanization.
South Fork Snoqualmie River Feasability Report This report documents initial feasibility studies done for the Reif Road Hazard Mitigation Grant Project. The project is intended to reduce flood hazards in the North Bend area. For financial reasons, this study was terminated prematurely. The report documents incomplete study results done before termination.
Spawning Salmon & Trout ID Card Cost $.91 each + $.08 tax + $.35 shipping for a total of $1.34 Storm Water Management Program
Stormwater Pollution Prevention Manual This manual presents reasonable pollution prevention measures required of businesses and other residents in unincorporated King County. The requirements focus on source control measures which prevent pollution from entering storm drains, streams, lakes, and groundwater. Information is also provided on stormwater treatment options and resources for technical assistance.
Strategic Plan Executive Proposal The Surface Water Management Strategic Plan proposes a future program which protects vital King County water resources from urbanization, aggressively solves long standing flooding problems, and seeks to meet state mandates for growth management and new Federal water quality laws. The Strategic Plan presents a six year program for 1992 through 1997, with stable service charge rates in two three year increments. It expands the existing service area, the western, urbanized 1/3 of unincorporated King County, with the inclusion of the Middle Cedar River Drainage Basin.
Surface Water Design Manual This manual contains the design requirements for stormwater control facilities and BMPs for development projects in unincorporated King County. The current version is the 2005 edition. The 1998 edition is also available.
Surface Water Division Policy Plan This August 1992 document include SWM Division Policies SWM's approach to Surface Water Management. It has three sections: (1) Background, a brief history, with emphasis on the last 3 years, (2) Policies that govern 9 major program areas, and (3) an Appendix.
Swamp Creek Action Plan Free !!! Call 296-8321 for handout. The Integrated Pond - Enhancing The Design And Value of Stormwater Ponds (1998) This illustrated booklet provides information on techniques that are effective in better integrating stormwater ponds into neighborhoods. It summarizes the landscape requirements of the King County Surface Water Design Manual, and discusses several general techniques to enhance stormwater pond aesthetics. In addition, several case studies are presented , sharing with the reader techniques and solutions used by resourceful designers and engineers to make stormwater facilities attractive features of neighborhoods.
Told & Ranging River Channel Migration Study With Maps The results of this study will be used to formulate regulations for development in the Tolt & Raging Rivers, both tributaries to the Snoqualmie River.
Tolt River Flood control Project Feasability Report This report contains hydrologic and hydraulic studies, geotechnical and geomorphic studies, and survey data, and presents our analyses, conclusions, recommendations and estimated costs for each of three alternatives studied as part of this project, in order to reduce the flood hazard along this reach of the Tolt River. In addition, the feasability report presents our recommended alternative for design.
Vactor Sediments Evaluation
Vactor Waste Disposal Plan
Water And Land Resources Divison Stategic Plan
Wetland Breeding Amphibean Monitoring Program
NewslettersMost files are provided using Adobe Acrobat (.pdf format). You will need Acrobat installed to view or download a newsletter. Click here for more information our Acrobat. Downstream News - Fall 2003; Vol 12, No. 2 Edition Lake Steward Public Education MaterialsBookletsFlood Warning Information for King County River Basins Lakeside Logic Programs for Educators Puget Sound Shoreline Stewardship Guidebook - King County Edition Children's Items
Videos, CD's and CassettsEverything Connected
Lakeside Living Video
Lalmon On The Brink
Shoreline Armouring Workshop Video
True Color
Water and Land Resources Division - Services Directory
Waterdheds: H2OPE For The Future
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