Spokane River Watersheds

Watershed Planning & Implementation for WRIAs 54, 55, 56, & 57

WRIA 54 - Nitrate Data

WRIA 54 Web Mapping Application

This data layer includes nitrate concentrations as reported to the Spokane Regional Health District for the purpose of providing evidence of an adequate water supply to obtain a building permit.

This data layer includes portions of Spokane County not in WRIA 54.