Cache River Containment Basin Dam
Cache River Containment Basin Dam is an earth dam located in Pulaski County, Illinois, built in 2004. It carries a Low hazard potential classification.
About Cache River Containment Basin Dam
Cache River Containment Basin Dam is a dam in Pulaski, Illinois. The dam is owned by Cypress Creek National Wildlife Refuge (federal). It impounds the Trib Cache River near Ullin.
The dam stands 9 feet tall and stretches 326 feet across, creates a reservoir covering 11 acres, has a maximum storage capacity of 88 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 2004, the structure is relatively new.
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 11/12/2025.
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Location
| State | Illinois |
| County | Pulaski |
| Nearest City | Ullin |
| River/Stream | Trib Cache River |
| Coordinates | 37.29041, -89.05793 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 9 ft |
| Dam Height | 9 ft |
| Dam Length | 326 ft |
| Year Completed | 2004 (22 years old) |
Storage & Hydraulics
| NID Storage | 88 acre-ft |
| Max Storage | 88 acre-ft |
| Normal Storage | 39 acre-ft |
| Surface Area | 11 acres |
| Drainage Area | 0 sq mi |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Other |
| Owner | CYPRESS CREEK NATIONAL WILDLIFE REFUGE |
| Owner Type | Federal |
| Hazard Classification | Low |
| Condition Assessment | Not Available |
| Last Inspection | 11/12/2025 |
| Emergency Action Plan | No |
Identifiers
| NID ID | IL50500 |
| Federal ID | IL50500 |
| More Info | State Dam Safety Program |