Process: 3 separate ways:

A) Search / Zoom and Click "Delineate",
B) select 14 digit HUC
C) or type in your location coordinates.


Search for or Zoom-in to your area.

Select "Delineate" button and click on the stream whose watershed you plan to analyze.

To enter a specific latitude- longitude select "Lat-Lon" button below , longitude with minus sign must be within -89.00000 to -86.00000 and latitude within 37.00000 to 41.00000

Select UTM Zone16 N coordinates in meters: range of X should be within 401000 to 711000 and Y within 4180000 to 4628000
Finally click Done

UTM Z16   Lat-Lon
Y (or Lat):
X(or Lon):

We are using a 10 - digit HUC watershed as the largest possible size!
(What is a 10 Digit HUC versus a 14 digit HUC?)

To run analysis on a specific 14 DIGIT HUC, click the "HUC 14" button and select the desired watershed.



This Online Watershed Delineation (OWL) tool will delineate the area that flows to pour point and allow you to send that outline, and the soil and landuse data within the outline to our online models.

Check the checkbox to display streaming WMS layer

HUC 8, 10, and 12 layer NHD water layer