Dam Report

Hollybrook Lake Dam dam

Indiana, USA Limestone Creek Hazard High
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Tonight low
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Dam height
18ft
Hazard rating
High
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Hollybrook Lake Dam -- None dam
Hollybrook Lake Dam None · Limestone Creek
About this dam

Hollybrook Lake Dam

Hollybrook Lake Dam, located in Owen, Indiana, is a privately owned structure with a primary purpose of recreation. Completed in 1940, this earth dam stands at a height of 17.6 feet and has a structural height of 18 feet. The dam spans 329 feet in length and has a storage capacity of 306 acre-feet, with a normal storage level of 113 acre-feet. The dam is situated on Limestone Creek and is regulated by the Indiana Department of Natural Resources.

Despite being classified as having a high hazard potential, the condition assessment of Hollybrook Lake Dam is rated as satisfactory. The last inspection in 2015 revealed no significant issues, with inspection frequency set at every two years. The dam has an uncontrolled spillway type, with valve outlet gates in place. In the event of an emergency, the dam is deemed to have a moderate risk level, with risk management measures potentially in place to mitigate any potential threats.

Hollybrook Lake Dam serves as a vital recreational asset in the area, offering opportunities for water-based activities and enjoyment of the surrounding natural environment. With its historical significance dating back to the early 20th century, the dam continues to provide valuable storage capacity and flood control measures for the local community. Maintaining the safety and integrity of this dam remains a top priority, ensuring its continued function and preservation for future generations of water resource and climate enthusiasts.

StateNone
River / streamLimestone Creek
NID IDIN00384
Owner typePrivate
Primary purposeRecreation
Dam typeEarth
Year built1940
Dam height18 ft
Dam length329 ft
Max storage306 AF
Normal storage113 AF
Surface area29.0 ac
Drainage area9.7 sq mi
Hazard potentialHigh
ConditionSatisfactory
Last inspectionThu, 16 Jul 2015 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 Hollybrook Lake Dam -- inflows here typically show up in storage 24-72 hours later.

Track Hollybrook Lake 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.

FAQ

About Hollybrook Lake Dam

Where does the data for Hollybrook Lake 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 High 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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