Dam Report

Grass Lake Level Control Structure dam

Michigan, USA Barkley Creek Hazard Significant
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Tonight low
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Dam height
29ft
Hazard rating
Significant
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Grass Lake Level Control Structure -- None dam
Grass Lake Level Control Structure None · Barkley Creek
About this dam

Grass Lake Level Control Structure

The Grass Lake Level Control Structure, also known as Lake Bella Vista Dam, is a privately owned dam located in Belmont, Michigan. Built in 1973, this earth dam serves primarily for recreational purposes and is regulated by the state of Michigan. With a height of 29 feet and a length of 1900 feet, the dam impounds Barkley Creek, creating a surface area of 240 acres and a drainage area of 1.5 square miles.

The dam's spillway, which is uncontrolled, has a width of 5 feet, and it has a significant hazard potential with a satisfactory condition assessment as of August 2020. The structure's maximum discharge capacity is 175 cubic feet per second, and it has a normal storage capacity of 1800 acre-feet. The dam is inspected every four years, with the last assessment conducted in August 2020. Despite being privately owned, the dam is subject to state regulation, inspection, and enforcement measures to ensure public safety and environmental protection.

Located in Kent County, Michigan, the Grass Lake Level Control Structure provides both recreational opportunities and flood control benefits to the local community. With its moderate risk assessment rating and satisfactory condition, this dam plays a crucial role in managing water resources and climate-related challenges in the region.

StateNone
River / streamBarkley Creek
NID IDMI00453
Owner typePrivate
Primary purposeRecreation
Dam typeEarth
Year built1973
Dam height29 ft
Dam length1,900 ft
Max storage5,917 AF
Normal storage1,800 AF
Surface area240.0 ac
Drainage area1.5 sq mi
Hazard potentialSignificant
ConditionSatisfactory
Last inspectionTue, 18 Aug 2020 00:00:00 GMT

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.
Detailed forecast

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.

Hourly detail

Next 5 days, hour by hour

Temperature line with weather symbols on top, snow + rain accumulation as columns, humidity as a dotted line.

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Deep dive

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.

TimeConditionTemp (°F)Snow (in)Rain (in)Humidity (%)Wind (mps)Wind dir
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Long-term outlook

15-day temperature & precipitation

Daily temperatures, snow, and rain projected over the next two weeks.

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Regional inflow

Nearby streamflow gauges

USGS streamgauges around Grass Lake Level Control Structure -- inflows here typically show up in storage 24-72 hours later.

Track Grass Lake Level Control Structure in the Snoflo app

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FAQ

About Grass Lake Level Control Structure

Where does the data for Grass Lake Level Control Structure 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 Significant 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.

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Other water bodies near here

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Manage alerts in the Snoflo app

Custom alerts are configured in the iOS app -- favorite this dam, set a threshold, and you'll get a push the moment conditions cross.

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