Where can I find Stream codes for the State of Utah?

Question

Does anyone know where I can find Stream (rivers, waterbodies) codes for the State of Utah?

Thank You.

Answer 1

The high resolution Flowline layer in the NHD's mapservice has a ReachCode attribute, which is defined here as:

Unique identifier for a ‘reach’. The first eight numbers are the WBD_HUC8. The next six numbers are randomly assigned, sequential numbers that are unique within a HUC8, 14-char value

In theory you should be able to do this all via http using published map services. However, I get a 404 when I copy and paste the geometry returned by this query for Utah ..

http://sampleserver1.arcgisonline.com/ArcGIS/rest/services/Demographics/ESRI_Census_USA/MapServer/5/query?text=Utah&geometry=&geometryType=esriGeometryPoint&inSR=&spatialRel=esriSpatialRelIntersects&relationParam=&objectIds=&where=&time=&returnCountOnly=false&returnIdsOnly=false&returnGeometry=true&maxAllowableOffset=&outSR=&outFields=&f=pjson

... into the filter geometry textbox of the NHD's mapservice and click Query (POST). It even happens when Return Count only set to true, and everything else false.

Answer 2

You could also download the NHD data for your state, open the Feature Classes of the FGD in ArcMap/ArcCatalog, and open the attribute table and look them up by whatever attribute you are using, i.e. Feature Name, Reach Code, etc. NHD High Resolution by State FTP