The Pittsfield Sediment Trap Dam, also known as Lake Pittsfield Rock Dam, is a local government-owned structure designed by the USDA NRCS in Illinois.
Wind
Humidity
Constructed in 1997 on Blue Creek in Pike County, this Earth-type dam stands at 11 feet high and spans 548 feet in length. Its primary purpose is debris control, with a storage capacity of 254 acre-feet. While the dam's hazard potential is classified as low, it is regulated, permitted, inspected, and enforced by the Illinois Department of Natural Resources (IDNR).
Situated within the St. Louis District of the US Army Corps of Engineers, the Pittsfield Sediment Trap Dam features an uncontrolled spillway with a width of 1100 feet. Despite its moderate risk rating, the dam's condition assessment is not available, and there is no Emergency Action Plan (EAP) prepared as of the latest data update in May 2021. With a drainage area of 7.9 square miles, the dam serves as a vital structure for managing debris and sediment in the region. Its location at coordinates 39.65013° N, -90.75865° W contributes to water resource and climate management efforts in the area.
Year Completed |
1997 |
Dam Length |
548 |
Dam Height |
11 |
River Or Stream |
BLUE CREEK |
Primary Dam Type |
Earth |
Drainage Area |
7.9 |
Nid Storage |
254 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
11 |
Bay Creek At Pittsfield
|
43cfs |
Illinois River At Valley City
|
2970cfs |
La Moine River At Ripley
|
33cfs |
Spencer Cr. Bl Plum Cr. Nr Frankford
|
24cfs |
Salt River Near New London
|
82cfs |
Macoupin Creek Near Kane
|
20cfs |