Maynes Grove West Dam dam
Maynes Grove West Dam
Maynes Grove West Dam, located in Cedar Falls, Iowa, is a local government-owned structure designed by USDA NRCS for the primary purpose of recreation. Completed in 1992, this earth dam stands at 27 feet high and spans 433 feet in length, creating a reservoir with a storage capacity of 78 acre-feet. The dam, situated on TR- Maynes Creek, is regulated by the Iowa Department of Natural Resources and is subject to state permitting, inspection, and enforcement.
Despite its low hazard potential and moderate risk assessment, Maynes Grove West Dam has not been rated for its condition. With an uncontrolled spillway type and no outlet gates, the dam has a surface area of 6.1 acres and serves a drainage area of 0.25 square miles. While there are no associated structures or locks, the dam's primary function as a recreational site attracts water resource and climate enthusiasts alike. As an integral part of the local landscape, Maynes Grove West Dam offers a peaceful retreat for visitors to enjoy the beauty of its surroundings and the opportunities for outdoor recreation it provides.
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 Maynes Grove West Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Iowa River Near Rowan | 218 cfs | → |
| South Fork Iowa River Ne Of New Providence | 163 cfs | → |
| Boone River Near Webster City | 364 cfs | → |
| Beaver Creek At New Hartford | 254 cfs | → |
| Winnebago River At Mason City | 320 cfs | → |
| Shell Rock River At Shell Rock | 1,070 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Maynes Grove West Dam.
Boat launches
- Sierra County
- Dam Site Marina
- Marina Del Sur
- Rock Canyon Road Sierra County
- Monticello Road Sierra County
Campgrounds
- Caballo Lake State Park
- Percha Dam State Park
- Hillsboro City Rv Park
- Elephant Butte Lake State Park
- Kingston
- Kingston Campground
Paddle runs
- Aldo Wilderness Boundary To Nf Boundary
- Junction Of Water Canyon And Holden Prong To Aldo Leopold Wilderness Boundary
- Headwaters To Confluence With Las Animas Creek
- Headwaters To Junction Of Trails 707/68 (Sec 35, T12s, R11w)
- Headwaters To Confluence With Diamond Creek
- Headwaters To Aldo Leopold Wilderness Boundary
Track Maynes Grove West Dam 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 Maynes Grove West Dam
Where does the data for Maynes Grove West Dam 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 Maynes Grove West Dam.