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Environmental Data in King County, Washington

Environmental monitoring data

Swimming beach bacteria levels and water temperature
Use a regional map to look up water quality graphs and data for about 30 swimming beaches at lakes across King County.

Streams and rivers water quality monitoring data
Look up water quality data and graphs for streams and rivers including temperature, dissolved oxygen, pH, turbidity, conductivity, total suspended solids, phosphorus, nitrogen, bacteria, metals, precip, overall water quality index, and toxicity and pesticide studies.

Benthic macroinvertebrate (stream bug) monitoring
Learn why aquatic insect counts provide insight about the health of streams, and look up measures for many streams in King County, Washington. More data can be found at our Puget Sound stream benthos site (external link).

Major lakes water quality monitoring data
Lake buoy data - water column
Small lakes water quality monitoring data
Use maps to find sampling sites for graphs and data of temperature, dissolved oxygen, pH, conductivity, nitrogen, phosphorus, chlorophyll, secchi depth, fecal coliform count, and E. coli count.

Hydrologic Information Center
Look up records for over 500 sites for continuous recording stream gages on rivers and streams, continuous recording rain gages, visually checked staff and crest stage gages in wetlands, lakes and detention facilities, recording and non-recording groundwater wells, and water quality sampling.

Critical Areas Ordinance monitoring (Regulatory monitoring)

Groundwater data
View well logs and aquifer water quality samples as tabular data or using interactive maps.

Flood Warning System (river gage) data
Read the current gage readings for major river systems across King County, and compare to historical records of past flood events.

Puget Sound water quality monitoring data
Download data and view graphs for Conductivity-Temperature-Depth (CTD) profiles for various mapped points and cast dates.

Related information

Agencies

News and announcements

King County wants your opinion!
Countywide Strategic Plan

Sept. 30, 2009
External article, Seattle P-I
Study: House dust in washing machines might be chemically polluting Puget Sound

Sept. 25, 2009
External article, Seattle P-I
Study shows some reduction in Elliott Bay toxins

Sept. 11, 2009
External article, Seattle P-I
EPA puts limits on 3 pesticides to protect salmon

Apr. 30, 2009
External report, KING 5 News
New buoys track health of Seattle-area lakes video

Feb. 9, 2009
New Climate Report shows King County is reducing greenhouse gas
Goal is to better prepare for local impacts of climate change

Oct. 20, 2008
Brightwater education event takes school outside for 160 local students

Aug. 11, 2008
External article, Seattle P-I
Inadequate policing puts state's water quality in jeopardy
Fees now fund less than half of staff necessary to monitor pollution