Watershed Meeting

TO BE ANNOUNCED  
 IDWR office in Boise
10:00 a.m., Mountain Time 
see Events for Agenda

IMPORTANT NOTICE - please read!!

Please take a moment to review and comment on the WBD draft Issue Paper.  This document is intended to encourage the development of a comprehensive strategy for WBD stewardship nationwide. 

Send comments to:  Linda Davis at the Idaho Department of Water Resources

Thank you 

 The Idaho Department of Water Resources (IDWR) and Natural Resource Conservation Service (NRCS), in cooperation with various state and local agencies is in the process of updating 5^th and 6^th field sub-watershed boundaries for the State of Idaho.  

The purpose of this project is to create sixth field watershed boundaries for the state of Idaho using the USGS Interagency Guideline on Delineation of Watershed and Subwatershed Hydrologic Unit Boundaries standards, latest version dated March 1, 2002.  The delineation process will consist of the following procedures, but may be subject to additional review unique to each Hydrologic Unit Boundary.

Each Hydrologic Unit Boundary is assigned a steward or stewards who will create draft sixth field watershed lines for a hydrologic unit. Statewide 24k DRG and hydrography data will be utilized, along with NED Shaded Relief and aerial photos to determine boundary lines. Polygons will be  attributed with name and watershed number pursuant to watershed standards.

After the draft delineation process is complete, government and private individuals with local interest and knowledge will be invited to participate in a coordination workshop for each Hydrologic Unit. Information from neighboring states will also be incorporated to insure boundary consistency. After agreement of all interested parties, neighboring states and the technical working group, the lines will be given a ‘draft approval status’ and are called ‘concept lines’. These concept lines will be reviewed and revised to follow contour lines consistent with 1:24,000 scale data. Polygon attributes will also be updated pursuant to watershed standards.

Final certified data will be incorporated into the National Watershed Boundary Dataset, available in both coverage and shapefile formats, using ArcInfo and ArcView software.  Draft lines, including linework for surrounding states, can be viewed on an Arc/IMS watershed server at maps.idwr.idaho.gov/watersheds.   Please contact the watershed coordinator for each surrounding state to obtain the most recent version of their linework, as these lines are subject to change with updates and reviews.

 For additional information, please contact:

Genna Ashley, GIS Specialist (208) 287-4880  genna.ashley@idwr.idaho.gov
Linda Davis, Sr. GIS Analyst (208) 287-4877 linda.davis@idwr.idaho.gov

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Send any comments, questions or suggestions to: linda.davis@idwr.idaho.gov