Research & Data

Use this portal to filter and search for all of our scientific information.

Ecology provides the high-quality science that is the foundation of Washington state environmental policy. Our monitoring, assessment, and modeling services provide a data-rich understanding of our state’s land, air, and water. We provide access to that data through reports, databases, maps and user-friendly online tools.

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MS4 Permit Secondary Permitee List

List of Secondary Permittee for municipal stormwater permits

https://ecology.wa.gov/ms4-permit-secondary-permitee-list

Comments from Lincoln Loehr on Policy 1-11

2017 comments from Lincoln Loehr about Human health surface water quality criteria Policy 1-11

https://ecology.wa.gov/lloehrcommentshhc20170203

Listening Session July 10 2018

Slides from the July 10, 2018 Workshop and Listening Session

https://ecology.wa.gov/listening-session-powerpoint-july-10-2018

Estimation Methodology for Razor Clam-Related Trips

Estimation Methodology for spending near Mocrocks and Copalis beaches from razor clam-related trips

https://ecology.wa.gov/nbeachshellfishcalcspndngnea

Ecology Water Quality Funded Activity Projects - BMP Approval Form

Ecology Water Quality Funded Activity Projects' form for getting BMPs approved.

https://ecology.wa.gov/nonpoint-activity-bmp-approval-form

Monthly Record Keeping Calendar

Use this form to keep accurate records for the CAFO permit

https://ecology.wa.gov/monthly-record-keeping-calendar

Final MOU WSDA and Ecology 2011

This is the Memorandum of Understanding between Washington Dept. of Agriculture and Ecology. It explains roles and responsibilities of each agency.

https://ecology.wa.gov/mou-agecology-2011final

Low-Impact Development Operations & Maintenance Guidance Document

Guidance document for Western Washington Low-Impact Development Operations & Maintenance.

https://ecology.wa.gov/lido-mguidancedocument

Low Impact Development Operations & Maintenance Training

Low Impact Development Operations and Maintenance Training

https://ecology.wa.gov/lido-mtrainingpowerpoint

Crosswalk: Western Washington Phase II and Phase I permits; 2014 Stormwater Management Manual for Western Washington; Municipal Separate Storm Sewer System (MS4) (2015)

Refer to Western Washington Phase II and Phase I Permit references to the 2014 Stormwater Management Manual for Western Washington sections and how they relate to the Municipal Separate Storm Sewer System (MS4) permits

https://ecology.wa.gov/ms4permit-to-swmmww-2015

Local Limits Spreadsheet

This spreadsheet helps individual water quality permittees to develop local discharge limitations.

https://ecology.wa.gov/newl11blank

Tip Sheet for Managing Roles in Ecology EAGL System

https://ecology.wa.gov/managing-eagl-recipient-roles-tip-sheet

Invasive Moth Control Permit Fact Sheet

https://ecology.wa.gov/mothfactsheet041204

Invasive Moth Control Permit

https://ecology.wa.gov/mothfinalpermit

Lower Yakima Valley Groundwater Management Program FAQs

Frequently Asked Questions

https://ecology.wa.gov/lower-yakima-valley-groundwater-management-pro-1

Fact Sheet Addendum for the Modification of the Sand and Gravel General Permit

APPENDIX B: FACT SHEET ADDENDUM SAND AND GRAVEL GENERAL PERMIT DRAFT PERMIT MODIFICATION

https://ecology.wa.gov/modificationfactsheet

Lynnwood meeting notes for MS4 permit reissuance public meeting

2/23/17: W.WA Municipal Stormwater Permit Reissuance public meeting– Lynnwood

https://ecology.wa.gov/lynnwoodmtg-notes02232017

2018 Nisbet Pretreatment Plan

Pretreatment plan for Zostera japonica controls on commercial clam beds in Willapa Bay for Nisbet.

https://ecology.wa.gov/nisbet-2018-pretreatment-plan

Annual Report for Long Island Oyster

Annual report reviews Zostera Japonica controls on commercial clam beds in Willapa Bay for Long Island Oyster.

https://ecology.wa.gov/long-is-3003-2017-annual-report

2018 Pretreatment Plan for Long Island

2018 pretreatment plans on control for commercial clam beds in Willapa Bay for Long Island.

https://ecology.wa.gov/long-island-2018-pretreatment-plan