Mayowood Lake dam
Mayowood Lake
Mayowood Lake, located in Olmsted County, Minnesota, is a gravity dam constructed in 1920 with a primary purpose labeled as "Other." The dam stands at a height of 20 feet and has a structural height of 25 feet, with a length of 140 feet and a storage capacity of 352 acre-feet. The lake covers a surface area of 10 acres and has a drainage area of 147 square miles, with a maximum discharge rate of 5479 cubic feet per second.
Managed by the local government, Mayowood Lake is regulated by the Minnesota Department of Natural Resources, with state permitting, inspection, and enforcement processes in place. The dam has been assessed as having a low hazard potential and satisfactory condition as of the last inspection conducted in June 2017. While no Emergency Action Plan (EAP) details were provided in the data, the lake's risk assessment, inundation maps, and risk management measures are currently unspecified.
Mayowood Lake serves as a vital water resource in the region, with its connection to the Zumbro River South Fork providing important environmental benefits. This reservoir contributes to the overall water management system in the area, showcasing the intersection of water resource management and climate considerations in safeguarding the community against potential risks associated with dam operations.
Dam data reference
Condition Assessment
- Satisfactory
- No existing or potential dam safety deficiencies are recognized. Acceptable performance is expected under all loading conditions (static, hydrologic, seismic) in accordance with the minimum applicable state or federal regulatory criteria or tolerable risk guidelines.
- Fair
- No existing dam safety deficiencies are recognized for normal operating conditions. Rare or extreme hydrologic and/or seismic events may result in a dam safety deficiency. Risk may be in the range to take further action.
- Poor
- A dam safety deficiency is recognized for normal operating conditions which may realistically occur. Remedial action is necessary. POOR may also be used when uncertainties exist as to critical analysis parameters which identify a potential dam safety deficiency.
- Unsatisfactory
- A dam safety deficiency is recognized that requires immediate or emergency remedial action for problem resolution.
- Not Rated
- The dam has not been inspected, is not under state or federal jurisdiction, or has been inspected but, for whatever reason, has not been rated.
Hazard Potential Classification
- High
- Dams assigned the high hazard potential classification are those where failure or mis-operation will probably cause loss of human life.
- Significant
- Dams assigned the significant hazard potential classification are those dams where failure or mis-operation results in no probable loss of human life but can cause economic loss, environmental damage, disruption of lifeline facilities, or impact other concerns. Significant hazard potential classification dams are often located in predominantly rural or agricultural areas but could be in areas with population and significant infrastructure.
- Low
- Dams assigned the low hazard potential classification are those where failure or mis-operation results in no probable loss of human life and low economic and/or environmental losses. Losses are principally limited to the owner's property.
- Undetermined
- Dams for which a downstream hazard potential has not been designated or is not provided.
Plan around the weather
Same NOAA / yr.no feed Snoflo's iOS app uses. Watch the precipitation column on the meteogram -- rain on the basin upstream typically lifts inflow 24-72 hours later.
Next 5 days, hour by hour
Temperature line with weather symbols on top, snow + rain accumulation as columns, humidity as a dotted line.
5-day forecast table
Every 3 hours, broken out across temperature, snow, rain, humidity, and wind. Each cell is colour-coded relative to the column min/max.
| Time | Condition | Temp (°F) | Snow (in) | Rain (in) | Humidity (%) | Wind (mps) | Wind dir |
|---|---|---|---|---|---|---|---|
| Loading detailed forecast… | |||||||
15-day temperature & precipitation
Daily temperatures, snow, and rain projected over the next two weeks.
Nearby streamflow gauges
USGS streamgauges around Mayowood Lake -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| South Fork Zumbro River At Rochester | 159 cfs | → |
| Root River Near Pilot Mound | 393 cfs | → |
| Cedar River Near Austin | 173 cfs | → |
| Zumbro River At Kellogg | 1,550 cfs | → |
| Straight River Near Faribault | 286 cfs | → |
| Mississippi River At Red Wing | 19,400 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Mayowood Lake.
Campgrounds
- Camp Grounds
- Oxbow Park Campground
- Bear Cave Park
- Chester Woods/Kisrow County Park
- Old Campground
- Oronococ City Park
Fishing spots
- Bigalks Creek
- Dacota Street Fishing Pier
- Huff Street Fishing Pier
- Franklin St. Fishing Pier
- Coldwater Creek
Track Mayowood Lake in the Snoflo app
Save this dam as a favorite and get the local NOAA / yr.no forecast plus regional flow context wherever you are.
About Mayowood Lake
Where does the data for Mayowood Lake come from?
Structural and regulatory data come from the U.S. Army Corps of Engineers' National Inventory of Dams (NID). Weather forecast comes from NOAA / yr.no -- the same feed Snoflo's iOS app uses.
How often is the report updated?
NID structural data refreshes annually as the Corps publishes updated assessments. The weather forecast refreshes throughout the day.
What does the Low hazard rating mean?
The Corps of Engineers' hazard potential classification grades probable consequences if the dam fails: High = probable loss of human life; Significant = no probable loss of human life but possible economic loss / environmental damage; Low = no probable loss of human life, only minor economic / environmental losses. See the Dam Data Reference card above for the full definitions.
What's "% of normal"?
The current storage value compared to the historical average storage on this calendar day. 100% = right on average; values above 100% mean above-normal storage (wet year); values below mean below-normal (dry year or drought).
Can I get alerts when storage crosses a threshold?
Yes -- alerts are managed in the Snoflo iOS app. Favorite this dam, set a threshold, and you'll get a push the moment conditions cross.
Other water bodies near here
Snoflo-tracked reservoirs and dams within driving distance of Mayowood Lake.