Site B Dredge Disposal Pond Dam
Site B Dredge Disposal Pond Dam is an earth dam located in Randolph County, Illinois, built in 1992. It carries a Low hazard potential classification.
About Site B Dredge Disposal Pond Dam
The primary purpose of Site B Dredge Disposal Pond 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 Kaskaskia Regional Port District (private). It impounds the Trib Kaskaskia River near Kaskaskia.
The dam stands 12 feet tall and stretches 5,000 feet across, has a maximum storage capacity of 860 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1992, the structure is 34 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 05/13/2025.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Illinois |
| County | Randolph |
| Nearest City | Kaskaskia |
| River/Stream | Trib Kaskaskia River |
| Coordinates | 37.97981, -89.94007 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 12 ft |
| Dam Height | 12 ft |
| Dam Length | 5,000 ft |
| Year Completed | 1992 (34 years old) |
Storage & Hydraulics
| NID Storage | 860 acre-ft |
| Max Storage | 860 acre-ft |
| Normal Storage | 640 acre-ft |
| Drainage Area | 0 sq mi |
| Max Discharge | 45 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Debris Control |
| Owner | KASKASKIA REGIONAL PORT DISTRICT |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not Available |
| Last Inspection | 05/13/2025 |
| Emergency Action Plan | No |
Identifiers
| NID ID | IL50176 |
| Federal ID | IL50176 |
| More Info | State Dam Safety Program |