Dam Report

Dam 22-9-4 dam

Nebraska, USA Tr-W Fk Big Blue River Hazard Low
Today high
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Tonight low
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Dam height
31ft
Hazard rating
Low
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Dam 22-9-4 -- None dam
Dam 22-9-4 None · Tr-W Fk Big Blue River
About this dam

Dam 22-9-4

Dam 22-9-4, located in McCool Junction, Nebraska, is a local government-owned earth dam primarily used for irrigation purposes along the TR-W FK Big Blue River. Completed in 1984, this dam stands at a height of 31 feet with a hydraulic height of 24 feet and a length of 385 feet, providing a maximum storage capacity of 230 acre-feet. With a drainage area of 2.5 square miles and a normal storage capacity of 44 acre-feet, Dam 22-9-4 plays a crucial role in water resource management in the region.

Maintained and regulated by the Nebraska Department of Natural Resources, Dam 22-9-4 has a low hazard potential and is in satisfactory condition as of its last inspection in May 2016. Despite its age, this dam continues to effectively serve its purpose and contribute to the local irrigation infrastructure. With a maximum discharge capacity of 620 cubic feet per second, Dam 22-9-4 remains a key component of water management for agricultural activities in the area, showcasing the importance of sustainable water resource practices in the face of changing climate patterns.

As a vital piece of infrastructure in the region, Dam 22-9-4 serves as a reminder of the importance of proactive maintenance and monitoring of water resources in the face of climate variability. With its strategic location and efficient design, this dam stands as a testament to the resilience of water management systems in adapting to evolving environmental challenges. For water resource and climate enthusiasts, Dam 22-9-4 offers a fascinating case study in the intersection of engineering, natural resource management, and climate resilience.

StateNone
River / streamTr-W Fk Big Blue River
NID IDNE02156
Owner typeLocal Government
Primary purposeIrrigation
Dam typeEarth
Year built1984
Dam height31 ft
Dam length385 ft
Max storage230 AF
Normal storage44 AF
Surface area10.0 ac
Drainage area2.5 sq mi
Hazard potentialLow
ConditionSatisfactory
Last inspectionWed, 18 May 2016 12:00:00 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 Dam 22-9-4 -- inflows here typically show up in storage 24-72 hours later.

Track Dam 22-9-4 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 Dam 22-9-4

Where does the data for Dam 22-9-4 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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Snoflo-tracked reservoirs and dams within driving distance of Dam 22-9-4.