Dam Report

Horn Dam 4 dam

Nebraska, USA Logan Canyon Hazard Low
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Dam height
32ft
Hazard rating
Low
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Horn Dam 4 -- None dam
Horn Dam 4 None · Logan Canyon
About this dam

Horn Dam 4

Horn Dam 4, located in Banner, Nebraska, is a private dam designed by the USDA NRCS to serve as a crucial flood risk reduction structure in the area. Completed in 1963, this earth dam stands at a height of 32 feet and has a structural height of 36 feet, with a storage capacity of 53 acre-feet. With a low hazard potential and satisfactory condition assessment, Horn Dam 4 plays a vital role in protecting the surrounding community from potential flooding events.

Managed and regulated by the Nebraska Department of Natural Resources, Horn Dam 4 is subject to state permitting, inspection, and enforcement to ensure its safety and effectiveness in flood risk reduction. The dam is situated along the Logan Canyon, providing essential drainage and water management for a drainage area of 1.1 square miles. Despite its modest size, this dam serves as a critical infrastructure for water resource management in the region, highlighting the importance of private-public partnerships in addressing climate-related challenges.

With a maximum discharge capacity of 270 cubic feet per second, Horn Dam 4 is equipped to handle significant water flow during heavy rainfall or flood events. The dam's location, design, and maintenance reflect a commitment to sustainability and resilience in the face of changing climate patterns. As climate enthusiasts and water resource advocates, understanding the role of structures like Horn Dam 4 is essential in mitigating the impacts of climate change on our water systems and communities.

StateNone
River / streamLogan Canyon
NID IDNE00583
Owner typePrivate
Primary purposeFlood Risk Reduction
Dam typeEarth
Year built1963
Dam height32 ft
Dam length332 ft
Max storage53 AF
Normal storage16 AF
Surface area2.0 ac
Drainage area1.1 sq mi
Hazard potentialLow
ConditionSatisfactory
Last inspectionWed, 04 Oct 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 Horn Dam 4 -- inflows here typically show up in storage 24-72 hours later.

Track Horn Dam 4 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 Horn Dam 4

Where does the data for Horn Dam 4 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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