Arrowwood Lake Dam
Arrowwood Lake Dam is an earth dam located in St. Clair County, Illinois, built in 2001. It carries a Low hazard potential classification.
About Arrowwood Lake Dam
The primary purpose of Arrowwood Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Unknown (private). It impounds the Trib West Fork Richland Cr.
The dam stands 28 feet tall and stretches 900 feet across, creates a reservoir covering 17 acres, has a maximum storage capacity of 297 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 2001, 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. An emergency action plan is in place for this dam. The most recent inspection on record was 06/03/2021.
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Location
| State | Illinois |
| County | St. Clair |
| River/Stream | Trib West Fork Richland Cr |
| Coordinates | 38.37334, -89.99995 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 28 ft |
| Dam Height | 28 ft |
| Dam Length | 900 ft |
| Year Completed | 2001 (25 years old) |
Storage & Hydraulics
| NID Storage | 297 acre-ft |
| Max Storage | 297 acre-ft |
| Normal Storage | 200 acre-ft |
| Surface Area | 17 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 1,930 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | UNKNOWN |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not Available |
| Last Inspection | 06/03/2021 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | IL50425 |
| Federal ID | IL50425 |
| More Info | State Dam Safety Program |