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About Us

Regulations & Permits

Ecology oversees many state and federal laws designed to protect Washington's land, air, and water. Rules and regulations direct state agencies, local governments, businesses and others in how to comply with these laws. These rules and regulations are compiled in the Washington Administrative Code.

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tTools for ArcGIS
An ArcMap Python add-in with tools that analyze stream-channel attributes and near-stream topography and vegetation to estimate effective shade inputs for use in temperature modeling programs.
tTools for ArcGIS 9.x (Build 7.5.3)
An older version (for 9.x) of an ArcMap Python add-in with tools that analyze stream-channel attributes and near-stream topography and vegetation to estimate effective shade inputs for use in temperature modeling programs.
Puget Sound Tide Model
A research tool programmed in Python by David Finlayson for predicting the tides of the Sound. The model was originally developed by Lavelle et al. (1988) at NOAA PMEL and subsequently updated by H. Mofjeld to include the full suite of standard tidal constituents.
SolRad
A solar position and solar radiation calculator for Excel/VBA.
Manning's n calculator
An Excel/VBA program to calculate Manning's n (or depth) from cross-section data for trapezoidal or rectangular channels based on equation 14.32 in Chapra's Surface water quality modeling textbook.
SEPA document templates (forms)
SEPA checklist with guidance plus other suggested templates for SEPA notices.
QA Project Plan template
The template includes information and instructions needed for the preparation of a QA Project Plan. Some of the text will be deleted as the plan is prepared.
QA Project Plan checklist
The QA Project Plan checklist provides a list of all the required elements for the plan.
Environmental Information Management System (EIM) - search data
Access to discrete and time-series environmental data for air, water, soil, sediment, aquatic animals, and plants.
Environmental Assessment Program
Learn about Ecology's scientific research and services.
Raingarden and bioretention assessment protocol
Stormwater Action Monitoring effectiveness study: Raingarden and bioretention assessment protocol.
Regional stormwater facility study in Federal Way
Stormwater Action Monitoring effectiveness study: Regional stormwater detention facility retrofit.
January 15, 2013: Final fish consumption rates technical support document
Former Ecology Director Ted Sturdevant's 2013 transmittal letter announcing release of final fish consumption rates technical support document (version 2.0).
November 5, 2012: Fish Consumption Technical Review Meeting
Meeting summary from Nov. 5, 2012, technical review panel meeting to discuss the revised version of the Fish Consumption Technical Report V.2, hosted by Washington State Department of Ecology.
August 30, 2012: Fish consumption rates technical support document [draft Version 2]
Former Ecology Director Ted Sturdevant's 2012 transmittal letter announcing release of fish consumption rates technical support document [draft Version 2.0].
November 27, 2012: Fish Consumption Technical Review Meeting
Meeting summary from Nov. 27, 2012, technical review panel meeting to discuss the revised version of the Fish Consumption Technical Report V.2, hosted by Washington State Department of Ecology.
Received through January 18, 2012: Comments on Ecology's Fish Consumption Rates Technical Support Document (Version 1)
Comments received through January 18, 2012, in response to Ecology's Fish Consumption Rates Technical Support Document (Version 1).
Received through January 18, 2012: Emailed form comments in response to Ecology's Fish Consumption Rates Technical Support Document (Version 1).
Emailed (form) comments received through January 18, 2012, in response to Ecology's Fish Consumption Rates Technical Support Document (Version 1).
Received through October 26, 2012: Comments on Ecology's Fish Consumption Rates Technical Support Document (draft Version 2.0)
Comments received through October 26, 2012, on Ecology's Fish Consumption Rates Technical Support Document (draft Version 2.0).
QUAL2KW - Version 5
A modeling framework for simulating river and stream water quality. Version 5 has steady flows with repeating diel boundary conditions.
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