Dam Report

Alkali Dam dam

Nevada, USA Virgin Creek Hazard Low
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Dam height
16ft
Hazard rating
Low
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Alkali Dam -- None dam
Alkali Dam None · Virgin Creek
About this dam

Alkali Dam

Alkali Dam, located in Humboldt, Nevada, was completed in 1941 primarily for irrigation purposes along the Virgin Creek. Managed by the Fish and Wildlife Service, this earth dam stands at a structural height of 16 feet and stretches 235 feet in length, with a storage capacity of 1233 acre-feet and a surface area of 90 acres. Despite its low hazard potential, the dam's poor condition assessment in 2015 raises concerns about its long-term stability and maintenance.

The dam's proximity to the Sacramento District and its management by federal agencies like the DOI FWS highlight its significance in water resource management and climate conservation efforts in the region. With a moderate risk assessment rating and the presence of an uncontrolled spillway, the need for regular inspections and maintenance to ensure the dam's safety and functionality becomes crucial. Furthermore, the dam's location in a regulated state and its compliance with state permitting, inspection, and enforcement guidelines underscore its importance in upholding water resource regulations and environmental protection standards.

As a key infrastructure for irrigation in the area, Alkali Dam plays a vital role in supporting agricultural activities and water supply management in Humboldt, Nevada. However, with a poor condition assessment and a risk rating of moderate, continued monitoring and proactive measures are essential to safeguard the dam and mitigate potential hazards. The collaboration between federal and state agencies in regulating, inspecting, and operating the dam reflects a coordinated approach to ensure the sustainability of water resources and the protection of the surrounding environment for future generations.

StateNone
River / streamVirgin Creek
NID IDNV00001
Owner typeFederal
Primary purposeIrrigation
Dam typeEarth
Year built1941
Dam height16 ft
Dam length235 ft
Max storage1,233 AF
Normal storage315 AF
Surface area90.0 ac
Drainage area126.7 sq mi
Hazard potentialLow
ConditionPoor
Last inspectionTue, 28 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 Alkali Dam -- inflows here typically show up in storage 24-72 hours later.

StreamgaugeDischargeView
Mahogany Creek Near Summit Lake 2 cfs

Track Alkali 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 Alkali Dam

Where does the data for Alkali 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 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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