Surface Water Management Division

Data

Ground Water Online Data:
   Search by address or parcel number
   Search using the map tool
 

Real-Time Flood Warning Information - updated every 15 minutes
 

Surface Water Online Data:
   Lake Water Quality Data
   Stream Water Quality Data
   Search using the map tool

   Stream Flow and Rainfall Data
 

Drainage Inventory GIS Data (the SWMInventory.zip files)
For more info about this data set see Drainage Inventory GIS Data
  

Public Works Road Maintenance Culvert Inventory

The Fine Print

This website contains downloadable materials produced by Snohomish County government in the course of its official duties. Snohomish County disclaims any warranty of merchantability or warranty of fitness of these materials for any particular purpose, either express or implied. No representation or warranty is made concerning the accuracy, currency, completeness or quality of data depicted. Any user of these materials assumes all responsibility for use thereof, and further agrees to hold Snohomish County harmless from and against any damage, loss, or liability arising from any use of the material.