Mcwilliams Pond Dam 1
Mcwilliams Pond Dam 1 is an earth dam located in Montgomery County, Illinois, built in 1970. It carries a Low hazard potential classification.
About Mcwilliams Pond Dam 1
The primary purpose of Mcwilliams Pond Dam 1 is fish and wildlife pond. The dam creates habitat for fish and wildlife, supporting local ecosystems and potentially serving conservation goals. The dam is owned by Neal Mc Williams;neal Mc Williams (private). It impounds the Tr- Shoal Creek E W Fork near Panama.
The dam stands 30 feet tall and stretches 400 feet across, creates a reservoir covering 4 acres, has a maximum storage capacity of 38 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1970, the structure is well into its service life at over 50 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 08/08/2025.
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Location
| State | Illinois |
| County | Montgomery |
| Nearest City | Panama |
| River/Stream | Tr- Shoal Creek E W Fork |
| Coordinates | 39.04962, -89.48051 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 30 ft |
| Dam Height | 30 ft |
| Dam Length | 400 ft |
| Year Completed | 1970 (56 years old) |
Storage & Hydraulics
| NID Storage | 38 acre-ft |
| Max Storage | 38 acre-ft |
| Normal Storage | 30 acre-ft |
| Surface Area | 4 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 232 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Fish and Wildlife Pond |
| Owner | NEAL MC WILLIAMS;NEAL MC WILLIAMS |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not Available |
| Last Inspection | 08/08/2025 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | IL40108 |
| Federal ID | IL40108 |
| More Info | State Dam Safety Program |