Process: 2 separate ways to locate your point:

A) Search / Zoom and Click "Delineate",

B) 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. Your location is sent to our L-THIA engine and the watershed of that point is calculated; then you can run L-THIA model on it to predict runoff.

To enter a specific latitude- longitude select "Lat-Lon" button below , longitude with minus sign must be within -90.20000 to -82.50000 and latitude within 41.800000 to 47.00000

Select Michigan Oblique Mercator coordinates in meters: range of X should be within 174700 to 777000 and Y within 140200 to 760600

Finally click Done

MOM   Lat-Lon
Y (or Lat):   
X (or Lon):

About Us

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

HIT Sediment HIT Erosion HUC 8, 10, and 12 layer NHD water layer