Located in Woodbury, Iowa, the Parnell Creek Subwatershed Site 9-1 is a vital water resource managed by local government authorities for fire protection, stock use, and as a small fish pond.
Wind
Humidity
This earth dam structure, completed in 1968 by the USDA NRCS, stands at 44 feet in height and spans 641 feet in length, with a storage capacity of 171 acre-feet. With a drainage area of 1.07 square miles and a surface area of 5.5 acres, the dam serves to reduce flood risks in the area and is regulated by the Iowa Department of Natural Resources.
Despite its low hazard potential, the Parnell Creek Subwatershed Site 9-1 is considered to have a moderate risk level, with a 3 on the risk assessment scale. While the condition of the dam is currently not rated, regular inspections, permitting, and enforcement by state regulatory agencies ensure its safe operation. With a designated emergency action plan (EAP) and updated contact information, the site is prepared to manage any potential risks effectively. Overall, this site serves as a crucial infrastructure for water management and climate resilience in the region.
Year Completed |
1968 |
Dam Length |
641 |
Dam Height |
44 |
River Or Stream |
TR-PARNELL CREEK |
Primary Dam Type |
Earth |
Surface Area |
5.5 |
Drainage Area |
1.07 |
Nid Storage |
171 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
44 |
Maple River At Mapleton
|
323cfs |
West Fork Ditch At Hornick
|
80cfs |
Little Sioux River At Correctionville
|
327cfs |
Little Sioux River Near Turin
|
1040cfs |
Monona-Harrison Ditch Near Turin
|
158cfs |
Missouri River At Decatur
|
14900cfs |