Onion River
High HazardFair ConditionEmergency Action Plan: Yes
Location
| State | Wisconsin |
| County | Sheboygan |
| Nearest City | WALDO |
| River/Stream | ONION |
| Coordinates | 43.67619, -87.94385 |
Physical Characteristics
| Dam Type | Gravity |
| NID Height | 15 ft |
| Dam Height | 15 ft |
| Dam Length | 300 ft |
| Year Completed | 1856 (170 years old) |
Storage & Hydraulics
| NID Storage | 200 acre-ft |
| Max Storage | 200 acre-ft |
| Normal Storage | 100 acre-ft |
| Surface Area | 40 acres |
| Drainage Area | 22 sq mi |
| Max Discharge | 1,165 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Village of Waldo |
| Owner Type | Local Government |
| Hazard Classification | High |
| Condition Assessment | Fair |
| Last Inspection | 08/27/2020 |
| Emergency Action Plan | Yes |