Lake Mauvaise Terre Dredge Basin Dam is an earth dam located in Morgan County, Illinois. It carries a Low hazard potential classification.
Dam profile
NID height · 17 ft17 ft tall and 1,700 ft long. 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 Lake Mauvaise Terre Dredge Basin Dam
Lake Mauvaise Terre Dredge Basin Dam is a dam in Morgan, Illinois. The dam is owned by City of Jacksonville (local government). It impounds the Mauvaise Terre Creek near Jacksonville.
The dam stands 17 feet tall and stretches 1,700 feet across, creates a reservoir covering 60 acres, and has a maximum storage capacity of 545 acre-feet.
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 04/11/2018.
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Location
| State | Illinois |
| County | Morgan |
| Nearest City | Jacksonville |
| River/Stream | Mauvaise Terre Creek |
| Coordinates | 39.71125, -90.19769 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 17 ft |
| Dam Height | 17 ft |
| Dam Length | 1,700 ft |
Storage & Hydraulics
| NID Storage | 545 acre-ft |
| Max Storage | 545 acre-ft |
| Normal Storage | 429 acre-ft |
| Surface Area | 60 acres |
| Max Discharge | 20 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Other |
| Owner | City of Jacksonville |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 04/11/2018 |
| Emergency Action Plan | No |
Identifiers
| NID ID | IL50601 |
| Federal ID | IL50601 |
| More Info | State Dam Safety Program |