I-94 Rest Area is an earth dam located in Washington County, Minnesota, built in 1985. It carries a Low hazard potential classification and has a satisfactory condition assessment.
Dam profile
NID height · 30 ft30 ft tall, taller than 68% 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 I-94 Rest Area
The primary purpose of I-94 Rest Area is flood risk reduction. The dam is designed to control downstream flooding by temporarily storing excess water during storms and releasing it at a controlled rate. The dam is owned by Mndot (state). It impounds the St. Croix River-tr near Lakeland Shores.
The dam stands 30 feet tall, creates a reservoir covering 11 acres, has a maximum storage capacity of 51 acre-feet, and collects water from a drainage area of 51 square miles. Completed in 1985, the structure is 41 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. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. The most recent inspection on record was 10/19/2023.
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Location
| State | Minnesota |
| County | Washington |
| Nearest City | Lakeland Shores |
| River/Stream | St. Croix River-tr |
| Coordinates | 44.95314, -92.81473 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 30 ft |
| Dam Height | 30 ft |
| Year Completed | 1985 (41 years old) |
Storage & Hydraulics
| NID Storage | 51 acre-ft |
| Max Storage | 51 acre-ft |
| Normal Storage | 51 acre-ft |
| Surface Area | 11 acres |
| Drainage Area | 51 sq mi |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Mndot |
| Owner Type | State |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 10/19/2023 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MN01261 |
| Federal ID | MN01261 |
| More Info | State Dam Safety Program |