Dam Report

Middle Fork Of Anderson River - No. 23 dam

Indiana, USA Coon Branch Hazard Significant
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Dam height
37ft
Hazard rating
Significant
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Middle Fork Of Anderson River - No. 23 -- None dam
Middle Fork Of Anderson River - No. 23 None · Coon Branch
About this dam

Middle Fork Of Anderson River - No. 23

Middle Fork of Anderson River - No. 23, also known as Coon Branch Lake Dam, is a state-owned structure located in Perry County, Indiana. Built in 1992 by USDA NRCS, this earth dam stands at a height of 36.5 feet and has a storage capacity of 227 acre-feet. Its primary purpose is flood risk reduction, serving to protect the surrounding area from potential inundation during heavy rainfall events.

Managed by the Indiana Department of Natural Resources, this dam is regulated, permitted, inspected, and enforced by the state agency to ensure its safety and functionality. With a significant hazard potential and a fair condition assessment as of 2012, the dam requires regular inspections and maintenance to mitigate risks and uphold its structural integrity. Despite its high risk assessment level, the dam has not undergone modifications since its completion, emphasizing the importance of ongoing monitoring and management to safeguard against potential failures.

Situated on Coon Branch within the Louisville District of the US Army Corps of Engineers, this dam plays a crucial role in water resource management and climate resilience efforts in the region. Its strategic design and construction by the Natural Resources Conservation Service signify a commitment to enhancing flood control measures and protecting communities downstream. As water resource and climate enthusiasts, understanding the significance of structures like Middle Fork of Anderson River - No. 23 highlights the intersection of infrastructure, environmental stewardship, and public safety in sustaining resilient water systems for the future.

StateNone
River / streamCoon Branch
NID IDIN03918
Owner typeState
Primary purposeFlood Risk Reduction
Dam typeEarth
Year built1992
Dam height37 ft
Dam length450 ft
Max storage227 AF
Surface area5.0 ac
Drainage area0.8 sq mi
Hazard potentialSignificant
ConditionFair
Last inspectionFri, 31 Mar 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 Middle Fork Of Anderson River - No. 23 -- inflows here typically show up in storage 24-72 hours later.

Track Middle Fork Of Anderson River - No. 23 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 Middle Fork Of Anderson River - No. 23

Where does the data for Middle Fork Of Anderson River - No. 23 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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