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Lakes reports are available to download and are provided in Adobe PDF format. You will need Adobe Acrobat to view the document. If you do not have this software, you can download a free copy of Adobe© Acrobat© Reader
- 520 Bridge Storm Water Runoff Report
The Highway 520 Bridge Storm Water Runoff Study is a data collection effort that is part of the Sammamish-Washington Analysis and Modeling Program (SWAMP). SWAMP is a water quality and quantity monitoring and modeling project that was initiated in 2000 to support a variety of potential water resource decisions for the majority of the Greater Lake Washington watershed.
- Assessing the Impact of Pesticide Mixtures on the Survival and Fecundity of Daphnia pulex Report.
The Assessing the Impact of Pesticide Mixtures on the Survival and Fecundity of Daphnia pulex study was designed to assess the effects of mixtures on pesticides on stream organisms over several generations.
- Benthic Macroinvertebrate Study of the Greater Lake Washington and Green-Duwamish River Watersheds Reports
This report summarizes benthic macroinvertebrate data collected from a total of 130 sites in 20 sub-basins in the Green Duwamish River and Greater Lake Washington watersheds during August and September 2003 and 2003
- East Hylebos Creek 2001 Monitoring Program Final Report
The 2001 East Hylebos Creek Monitoring Program Final Report provides a general characterization of water quality, stream flow, and aquatic habitat conditions in the lower reaches of the East Hylebos Creek system.
- Endocrine Disruptors in King County Surface Waters
Survey of endocrine disupting compounds in King County surface waters including streams, lakes, and marine waters.
- Existing Water Quality Conditions in the Snoqualmie River Near the City of Carnation
Baseline water quality monitoring results from 2003-2004 in the Snoqualmie and Tolt Rivers near the City of Carnation, King County, Washington State.
- Fish Index of Biotic Integrity.
The development of a fish index of biotic integrity (FIBI) for the greater Lake Washington watershed was undertaken as part of the weight-of-evidence component of an ecological risk assessment for the Sammamish-Washington Analysis and Monitoring Program (SWAMP).
- Freshwater Stream Sediment Review of Historical Monitoring Data 1987-2002
This data report describes the streams sediment monitoring program and provides a review of the historical freshwater stream sediment quality data for the period 1987–2002.
- Green-Duwamish Microbial Source Tracking Report
This report describes the results of a microbial source tracking project on the Green River.
- Habitat Inventory and Assessment of Juanita Creek in 2000
Habitat assessment of Juanita Creek using methods derived from standard assessment protocols.
- Habitat Inventory and Assessment of Three Sammamish River Tributaries
From August to November of 1999, King County conducted habitat assessments on Swamp, North, and Little Bear Creeks using methods derived from standard assessment protocols
- Human Health Risk Assessment
- An Analysis of a Persistent Isotherm Tilt During Early - Spring 2003 and 2004 and Its Effect on the Diatom Bloom: Lake Washington, Seattle, Washington
- Juanita Creek Inventory and Habitat Assessment
In August of 2000, habitat on Juanita Creek was assessed using methods derived from standard assessment protocols. The goals of the habitat assessment project for Juanita Creek were threefold: (1) characterize instream and riparian habitat quality– primarily for salmonids; (2) establish a baseline for future evaluation of trends in habitat quality and watershed function; and (3) provide information for process of prioritizing areas for restoration and preservation.
- King County DNRP Performance Measures
King County is committed to creating a high performance organization that is accountable to the public we serve. As part of this commitment, the Department of Natural Resources and Parks is in its third year of measuring our performance and using this performance information to improve the environment and quality of life in King County.
- Lake Washington Existing Conditions Report
The Water Quality Monitoring of Northern Lake Washington Streams Report summarizes 20 years of water quality data collected from stream sites, primarily in the northern Lake Washington basin.
- Major Lakes Phytoplankton Sampling Techniques Comparison Study
The Major Lakes Phytoplankton Study was initiated in March 2003 and involved the collection of integrated composite samples of surface water for phytoplankton species identification, enumeration, and estimation of species-specific phytoplankton biovolume.
- Major Lakes Continuous Temperature Study - Interim Progress Report
Interim progress report on a continuous temperature study of Lake Washington in King County, Washington State
- North Lake Washington Streams Report
As part of its mission to protect and restore water quality, the Water and Lands Resources Division studied water quality trends and conditions in Lake Washington from 1990 to 2001.
- Phosphorus Transport Study
The objective of this study was to develop time series models describing stream water phosphorus concentration dependence on seasonal variations in stream baseflow, short term flow fluctuations, antecedent flow conditions, and rainfall.
- Pilot Freshwater Mussel Survey in King County
Results of a pilot freshwater mussel survey in Bear Creek, Stossel Creek, and Covington Creek, King County, Washington State.
- Results of a Human Use Survey for Shoreline Usage Areas of Lakes Washington, Union and Sammamish
This report summarizes information from a recreational use survey of Lakes Washington, Union and Sammamish. Data are statistically analyzed by age group, gender, ethnicity, activities, and other factors.
- Sammamish River Corridor Action Plan
The plan focuses on the Sammamish River's role as a necessary migratory corridor for anadromous salmon in the Sammamish Watershed. Implementation of the plan, however, would benefit more than just salmon and a wide range of other wildlife; it would also enhance the river corridor's ability to serve as a place of pleasure and refuge for the surrounding human community.
- Sammamish River Diel pH and Dissolved Oxygen Study
The Sammamish River has recently been the focus of a number of water quality studies, primarily due to the use of the river by Endangered Species Act (ESA) listed species of salmon. A review of Sammamish River monitoring data has also led the Washington State Department of Ecology to identify water quality problems related to elevated levels of fecal coliform bacteria, temperature, and pH and reduced levels of dissolved oxygen in the river (Washington State Department of Ecology 2000 303(d) list of impaired waters).
- Sammamish River Water and Sediment Quality Assessment
The objectives of the project were to provide an assessment of the current water and sediment quality conditions in the river, and to begin a database of analytical results for Sammamish River that would be useful for multiple King County projects (e.g., ESA-listed salmon, water reuse).
- Sediment Quality Evaluation in Lake Sammamish, Lake Union, and Lake Washingon
The Sediment Quality Triad (SQT) approach to sediment quality evaluation was used to characterize and assess the extent of altered benthic invertebrate assemblages, sediment contamination and toxicity in Lakes Sammamish, Washington, and Union near Seattle, Washington.
- Sediment Toxicity Report
The Sediment Quality Triad (SQT) approach to sediment quality evaluation was used to characterize and assess the extent of altered benthic invertebrate assemblages, sediment contamination and toxicity in Lakes Sammamish, Washington, and Union near Seattle, Washington.
- Snoqualmie Watershed Aquatic Habitat Conditions Report, 1999-2001.
This report summarizes and interprets data collected in the field from 1999-2001 about habitat conditions for multiple species of salmonids and other aquatic biota in aquatic ecosystems of the Snoqualmie Watershed, including the mainstem Snoqualmie River and several of its tributaries.
- Snoqualmie Watershed Geology Report
An overview of the geology and geomorphology of the Snoqualmie River Watershed
Snoqualmie Watershed Stream Habitat Reconnaissance Report
Assessment of habitat conditions, presence and relative distribution of salmonid species and other aquatic biota in 14 rivers and streams in the lower Snoqualmie Watershed.
- Streams Toxicity/Pesticide Report, 1999.
The Small Streams Toxicity/Pesticide Study is a study intended to assess the possible biological implications associated with the presence of pesticides in selected small streams in King County.
- Streams Toxicity/Pesticide Report, 2000.
The Small Streams Toxicity/Pesticide Study is a study intended to assess the possible biological implications associated with the presence of pesticides in selected small streams in King County.
Sampling and analysis plans available online:
Other SAPS available upon request. Email Jonathan Frodge for electronic copies.
- SWAMP Highway 520 Bridge Runoff Study SAP
- SWAMP Major Lakes Phytoplankton SAP
- Lake Union Sediment Study SAP
- Lake Washington Baseline Sediment Study SAP
- Lake Sammamish Baseline Sediment Study SAP
- Major Lakes Monitoring Program Endocrine Disrupting Compounds Survey SAP
- Lake Washington Hydrodynamic Phytoplankton 2004 SAP
- Hydrodynamic Monitoring Program 2004 SAP
- Treatment Effectiveness Evaluation of a Lake Protection Standard Facility
- Freshwater Swimming Beach Monitoring SAP
- Major Lakes SAP
- Major Lakes Program Continuous Temperature SAP
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