Ambient

Water quality monitoring stations

Baseflow Stations

Streamflow characteristics of Washington streams

Carbon Monoxide

Air quality maintenance areas

City and Urban Growth Areas

City limits and UGAs

Coastal Zone Atlas of Washington

Shoreline Slope Stability

Counties

Washington's 39 counties

Dairy Farms

Point locations of dairy farms in Washington.

Dams

Dams in Washington State

Driftcells

Shore drift along Puget Sound and Pacific Coast shorelines.

Emission Check Areas (Automobile)

Areas where automotive emission checks are required.

Environmental Information Monitoring Stations

Ecology's EIM database
Also see EIM Web Query System.

Areas of Extreme Concern

Areas where field gear decontamination is required to avoid spreading invasive species. (3 layers)

Facility/Site

Ecology permitted sites
Also, see Facility/Site on the Web.
Facility/Site Interaction Table web document.

FEMA Flood Data

• Q3 Flood Data
• Digital Flood Insurance Rate Maps (DFIRM)

Geographic Names Information System

GNIS database from USGS for Washington State

National Hydrography Dataset (NHD) 24k

Ecology has adopted the NHD for the state hydrography dataset. PNW Framework data is retired and no longer available.

NHD download instructions
Subbasin and SubRegion reference map
USGS:  Locate Your Watershed

National Hydrography Dataset (NHDPlus) 100k

Watercourses and waterbodies at 100k scale

National Hydrography Dataset (NHD) 24k:  Major Areas, Streams, & Waterbodies

Major NHD water features for cartographic use (3 layers).

Lake Bathymetry

Bathymetric contours of selected freshwater lakes

Land Cover:  Basins Potentially Meeting 40% Total Impervious Area

Water Quality Webpage

Land Use:  Washington State 2010

Statewide land use based on parcels and aerial photographs. (2 layers)

Marine Oil Spill Planning Information

Geographic Response Plan (GRP):  Strategies, Spill Origins, & Sector Maps (3 layers)
Spill Prevention, Preparedness, and Response Website

Washington Master Sample

Comparable, complementary monitoring sites.

Ozone

Air quality maintenance areas

Particulates

Air quality maintenance areas

Puget Sound Watershed Characterization Project

Watershed characterization for the Puget Sound drainage basins.

Quadrangle Boundaries - 1:24,000

USGS 7½' Quadrangle Map Boundaries

Quarter Quadrangle Boundaries - 1:24,000

USGS 7½' Quarter Quadrangle Boundaries

Quadrangle Boundaries - 1:62,500

USGS 15' Quadrangle Map Boundaries

Quadrangle Boundaries - 1:100,000

USGS 100k Quadrangle Map Boundaries

Quadrangle Boundaries - 1:250,000

USGS 250k Quadrangle Map Boundaries

USGS River Miles

River mile markers from USGS 7½ minute quadrangles

Seasonal Temperature

Waters Requiring Supplemental Spawning and Incubation Protection for Salmonid Species

Marine Shorelines

Washington's marine shorelines including an attribute for "shorelines of statewide significance" boundaries.

Shoreline Management Act - Streams and Rivers - Points

Points on streams and rivers where Shoreline jurisdiction begins and where streams and river cross county boundaries, as published in Chapter 173-18 WAC.  These will be replaced by points published in local government shoreline master programs.  See Chapter 173-18-044 WAC.

Shoreline Management Home

Shoreline Management Act - Streams and Rivers - Arcs

Streams and rivers published in Chapter 173-18-WAC.  These will be replaced by stream and river lists published in local government shoreline master programs.  See Chapter 173-18-044 WAC.

Shoreline Management Act - Lakes & Wetlands - Polygons

Water bodies (lakes, wetlands, etc.) published in Chapter 173-20 WAC.  These will be replaced by water body lists published in local government shoreline master programs.  See Chapter 173-20-044 WAC.

Shoreline Management Act - Adopted Arcs

Streams and rivers designated "shorelines of the state" by local governments and published in their shoreline master programs.  See Chapter 173-18-044 WAC.

Shoreline Management Act - Adopted Polygons

Water bodies (lakes, wetlands, etc.) designated "shorelines of the state" by local governments and published in their shoreline master programs.  See Chapter 173-20-044 WAC.

Suggested Shoreline Points

Estimated jurisdictional flow points on streams and rivers likely to qualify as "shorelines" and "shorelines of statewide significance", as defined in the Shoreline Management Act, Chapter 90.58.030 RCW.

Suggested Shorelines Arcs

Streams and rivers estimated to qualify as "shorelines of the state" based on their flow, as defined in the Shoreline Management Act, Chapter RCW 90.58.030 RCW.

Suggested Shorelines Polygons

Water bodies (lakes, wetlands, etc.) estimated to qualify as "shorelines of the state" based on their area, as defined in the Shoreline Management Act, Chapter 90.58.030 RCW.

Washington Marine Shoreline Public Access Project

The location, length, and degree of public access to Washington State's marine shoreline. Please submit updates to shorelinepublicaccess@ecy.wa.gov.

Washington Public Beach Access Points

A detailed GIS database of public access locations (point features) with attributes along the coastal shorelines.

State Tribal Lands

Current and historic Indian tribal lands.

Washington State Base Map

Outline of state boundary and water features.

2008 Washington Water Quality Assessment 303(d)

Washington State's 2008 Water Quality Assessment (WQA) produced in the Environmental Protection Agency's Integrated Report format consisting of both the 303(d) List and the 305(b) Report.  Water Quality's 303(d) website

Water Resource Inventory Areas (WRIA)

Areas for state water resource planning and administration.

Water Well Logs

Locations from the Water Resource Program.

Well Logs Home Page