Pittsfield Sediment Trap Dam is an earth dam located in Pike County, Illinois, built in 1997. It carries a Low hazard potential classification.
Dam profile
NID height · 11 ft11 ft tall and 548 ft long. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About Pittsfield Sediment Trap Dam
The primary purpose of Pittsfield Sediment Trap Dam is debris control. The dam is designed to catch sediment, rocks, and debris carried by flowing water — particularly important in areas prone to mudslides or heavy erosion. The dam is owned by City of Pitsfield (local government). It impounds the Blue Creek.
The dam stands 11 feet tall and stretches 548 feet across, has a maximum storage capacity of 254 acre-feet, and collects water from a drainage area of 7 square miles. Completed in 1997, the structure is 29 years old.
This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life. The most recent inspection on record was 04/18/2024.
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Location
| State | Illinois |
| County | Pike |
| Nearest City | None |
| River/Stream | Blue Creek |
| Coordinates | 39.65013, -90.75865 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 11 ft |
| Dam Height | 11 ft |
| Dam Length | 548 ft |
| Year Completed | 1997 (29 years old) |
Storage & Hydraulics
| NID Storage | 254 acre-ft |
| Max Storage | 254 acre-ft |
| Drainage Area | 7 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Debris Control |
| Owner | City of Pitsfield |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 04/18/2024 |
| Emergency Action Plan | No |
Identifiers
| NID ID | IL50391 |
| Federal ID | IL50391 |
| More Info | State Dam Safety Program |