A Watershed Perspective

for Managing Stormwater Runoff

and Water Quality

 

 

 

 

 

NEW:  IDNR Database for Stream Use Assessment Reports

 

LiDAR Data Acquisitions in Iowa

LiDAR Lake Darling Watershed

LiDAR Derived 2' Contour

 

What Is a Watershed?

It is another word for basin and is an area of land that collects and drains rain and snowfall to a common body of water, the boundaries of which are shaped by the landscape.  In Iowa, there are six river basins which drain to two river systems.  The Mississippi receives 2/3rds of the rainfall in Iowa, the other 1/3 drains to the Missouri River, both of which drain to the Gulf of Mexico.

 

Why Is It Important?

We all live in a watershed.  Do you know your watershed address?  Similar to a postal or zip code there is also a “watershed” code or Hydrological Unit Code also known as “HUC.”  The HUC system was developed so we all have a common reference and boundaries for watersheds.  HUCs contain 2 to 14 identifying numbers — the larger the number, the smaller the watershed.    The entire country has been mapped to an eight-digit HUC level and totals.  Iowa has 56 eight-digit HUCs, all but a few cross municipal boundaries.  This is what makes the assessment process so interesting—it not only requires working together with other city / county departments but also other jurisdictions to be meaningful and successful.  

Find Your Watershed Address...

Surf your watershed - link to the Environmental Protection Agency

Iowa Watershed Atlas - link to Iowa Department of Natural Resources

Know Your Watershed - link to Conservation Technology Information Center

What Can You Do to Protect Water Quality? 

 Take Action

Watershed Plan Builder

 

If you have any questions / comments please contact:

Pat Sauer, Iowa Association of Municipal Utilities (IAMU)

800-810-4268 or psauer@iamu.org