Springfield Coal/industry/pond 20 Dam is an earth dam located in McDonough County, Illinois, built in 1994. It carries a Low hazard potential classification.
Dam profile
NID height · 29 ft29 ft tall and 360 ft long, taller than 65% of U.S. dams with a recorded height. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About Springfield Coal/industry/pond 20 Dam
The primary purpose of Springfield Coal/industry/pond 20 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 Springfield Coal Company, LLC (private). It impounds the Trib Grindstone Creek.
The dam stands 29 feet tall and stretches 360 feet across, and has a maximum storage capacity of 53 acre-feet. Completed in 1994, the structure is 32 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 10/02/2024.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Illinois |
| County | McDonough |
| Nearest City | None |
| River/Stream | Trib Grindstone Creek |
| Coordinates | 40.29170, -90.74670 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 29 ft |
| Dam Height | 29 ft |
| Dam Length | 360 ft |
| Year Completed | 1994 (32 years old) |
Storage & Hydraulics
| NID Storage | 53 acre-ft |
| Max Storage | 53 acre-ft |
| Normal Storage | 13 acre-ft |
| Max Discharge | 44 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Debris Control |
| Owner | Springfield Coal Company, LLC |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 10/02/2024 |
| Emergency Action Plan | No |
Identifiers
| NID ID | IL50288 |
| Federal ID | IL50288 |
| More Info | State Dam Safety Program |