Threw Lake Dam
Threw Lake Dam is an earth dam located in Knox County, Illinois. It carries a Low hazard potential classification.
About Threw Lake Dam
The primary purpose of Threw Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Leslie Threw (private). It impounds the Trib North Fork Kickapoo Cr.
The dam stands 43 feet tall and stretches 700 feet across, creates a reservoir covering 13 acres, has a maximum storage capacity of 755 acre-feet, and collects water from a drainage area of 0 square miles.
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 09/19/2022.
At 43 feet, this dam is taller than 89% of dams nationwide.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Illinois |
| County | Knox |
| River/Stream | Trib North Fork Kickapoo Cr |
| Coordinates | 40.71971, -89.99215 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 43 ft |
| Dam Height | 43 ft |
| Dam Length | 700 ft |
Storage & Hydraulics
| NID Storage | 755 acre-ft |
| Max Storage | 755 acre-ft |
| Normal Storage | 536 acre-ft |
| Surface Area | 13 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 246 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | LESLIE THREW |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not Available |
| Last Inspection | 09/19/2022 |
| Emergency Action Plan | No |
Identifiers
| NID ID | IL50671 |
| Federal ID | IL50671 |
| More Info | State Dam Safety Program |