Riverdale
High HazardFair ConditionEmergency Action Plan: Yes
Location
| State | Wisconsin |
| County | St. Croix |
| Nearest City | Somerset |
| River/Stream | Apple River |
| Coordinates | 45.13160, -92.64050 |
Physical Characteristics
| Dam Type | Gravity |
| NID Height | 27 ft |
| Dam Height | 27 ft |
| Year Completed | 1905 (121 years old) |
Storage & Hydraulics
| NID Storage | 569 acre-ft |
| Max Storage | 569 acre-ft |
| Normal Storage | 569 acre-ft |
| Surface Area | 86 acres |
| Drainage Area | 521 sq mi |
| Max Discharge | 3,300 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Hydroelectric |
| Owner | Northern States Power Co |
| Owner Type | Public Utility |
| Hazard Classification | High |
| Condition Assessment | Fair |
| Last Inspection | 05/25/2022 |
| Emergency Action Plan | Yes |