Anderson Pond Dam
Anderson Pond Dam is an earth dam located in Rock Island County, Illinois, built in 1979. It carries a Low hazard potential classification.
About Anderson Pond Dam
The primary purpose of Anderson 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 Davis Anderson (private). It impounds the Tr- Mississippi River near Andalusia.
The dam stands 25 feet tall and stretches 250 feet across, creates a reservoir covering 1 acres, has a maximum storage capacity of 22 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1979, the structure is 47 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 07/18/2025.
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Location
| State | Illinois |
| County | Rock Island |
| Nearest City | Andalusia |
| River/Stream | Tr- Mississippi River |
| Coordinates | 41.42079, -90.70981 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 25 ft |
| Dam Height | 25 ft |
| Dam Length | 250 ft |
| Year Completed | 1979 (47 years old) |
Storage & Hydraulics
| NID Storage | 22 acre-ft |
| Max Storage | 22 acre-ft |
| Normal Storage | 15 acre-ft |
| Surface Area | 1 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 12 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Debris Control |
| Owner | DAVIS ANDERSON |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not Available |
| Last Inspection | 07/18/2025 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | IL40135 |
| Federal ID | IL40135 |
| More Info | State Dam Safety Program |