Water Levels on the Refuge and Nearby Rivers

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Water levels on nearby rivers have a significant impact on public accessibility and habitat conditions at the refuge.



Louisa Division

The Louisa Division is located adjacent to the Mississippi River, but is separated from the river by a levee. The Division is connected to the river by a sluice gate-style water control structure (the inlet tubes) which is located in Pool 17 of the Mississippi River.  This structure may be open or closed to the river depending on several factors including: season, river levels, and habitat conditions. Water levels on the Louisa Division can be assessed by checking the following automated water level gages:

 1) The Odessa WMA and Louisa Division at Schafer's Landing

 2) The Mississippi River at New Boston, IL

 3) The Mississippi River at Lock and Dam 17 (Pool)

* Please note that the water levels measurements for the Mississippi River gauges are not directly comparable to the the automated water level readings for the Odessa WMA and Louisa Division at the Schafer's Landing gauge. Call the refuge office if you have questions: 319-523-6982.

Big Timber Division

The Big Timber Division is comprised of four islands and an additional landmass adjacent to the Mississippi River.  This Division is completely open to fluctuations in Mississippi River levels.  Water levels on the Big Timber Division can be assessed by checking the following automated water level gages:

1) The Mississippi River at New Boston, IL

 

Keithsburg Division

The Keithsburg Division is located adjacent to Pool 18 of the Mississippi River.  A levee separates the Division from the Mississippi River.  A water-control structure on the south end of the Division provides connectivity with the river, and is open or closed depending upon season, river levels, and habitat conditions.  The Keithsburg Division is also influenced by water levels on the nearby Pope Creek and Edwards Rivers.

1) The Mississippi River at Keithsburg, IL

 

Horseshoe Bend Division

The Horseshoe Bend Division is located adjacent to the Iowa River approximately 6 miles from Wapello, IA.  A levee partially separates the Iowa River from the Division.  However, this levee is no longer being maintained and there are multiple breaches in the levee.  Water levels on the Horseshoe Bend Division can be assessed by checking the following automated gages:

1) The Iowa River at Wapello, IA

Please note that water from the Iowa Rivers begins flowing into this Division through breaches in the levee at a stage of approximately 16 at this gage.

 

*All the above links are for current and forecasted water levels provided by the National Weather Service (Advanced Hydrologic Prediction Service).  Water level observations on the Mississippi River are provided courtesy of the U.S. Army Corps of Engineers.  Water level observations on the Iowa River are provided courtesy of the U.S. Geological Survey.