Dam Report

Clear Dark Little Lakes dam

Minnesota, USA Lost River-Tr Hazard Low
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Tonight low
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Dam height
7ft
Hazard rating
Low
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Clear Dark Little Lakes -- None dam
Clear Dark Little Lakes None · Lost River-Tr
About this dam

Clear Dark Little Lakes

Clear Dark Little Lakes, located in Koochiching, Minnesota, is a state-regulated dam constructed in 1958 for purposes other than flood control. This gravity dam stands at 7 feet tall and spans 12 feet in length, with a storage capacity of 2904 acre-feet and a surface area of 78 acres. The dam is situated on the Lost River-TR stream and falls under the jurisdiction of the Minnesota Department of Natural Resources for permitting, inspection, and enforcement.

Despite its low hazard potential and fair condition assessment, Clear Dark Little Lakes plays a crucial role in regulating water flow and storage in the region. With a maximum discharge of 205 cubic feet per second, the dam contributes to the management of the 3.1 square mile drainage area. While the dam has not undergone recent modifications, its last inspection in August 2017 revealed its operational integrity, ensuring its continued function in water resource management for the community of GREMMEL.

Water resource and climate enthusiasts monitoring Clear Dark Little Lakes can appreciate the dam's historical significance and practical contribution to the local ecosystem. As part of the St. Paul District's infrastructure, the dam serves as a key feature in the region's water management strategy, highlighting the collaborative efforts between state agencies and the local community to maintain sustainable water resources. With its regulated state ownership and adherence to inspection and enforcement protocols, Clear Dark Little Lakes stands as a testament to responsible dam operations in Minnesota's landscape.

StateNone
River / streamLost River-Tr
NID IDMN00091
Owner typeState
Primary purposeOther
Dam typeGravity
Year built1958
Dam height7 ft
Dam length12 ft
Max storage2,904 AF
Normal storage2,370 AF
Surface area78.0 ac
Drainage area3.1 sq mi
Hazard potentialLow
ConditionFair
Last inspectionTue, 01 Aug 2017 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 Clear Dark Little Lakes -- inflows here typically show up in storage 24-72 hours later.

Track Clear Dark Little Lakes 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.

FAQ

About Clear Dark Little Lakes

Where does the data for Clear Dark Little Lakes 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.

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Premium feature

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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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