Dam Report

Tapps Lake Dike No 6 dam

Washington, USA Diversion From White River Hazard High
Today high
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Tonight low
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Dam height
26ft
Hazard rating
High
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Tapps Lake Dike No 6 -- None dam
Tapps Lake Dike No 6 None · Diversion From White River
About this dam

Tapps Lake Dike No 6

Tapps Lake Dike No 6, located in Auburn, Washington, is a crucial structure designed for recreation purposes. Completed in 1911, this earth dam stands at a hydraulic height of 26 feet, with a length of 600 feet. The dam has a storage capacity of 43,000 acre-feet, with a normal storage level of 41,000 acre-feet, covering a surface area of 2570 acres and draining a 9.7 square mile area.

Maintained by the Washington Department of Ecology, the dam has a high hazard potential, but is currently assessed to be in satisfactory condition as of February 2018. Regular inspections are conducted every 5 years to ensure the safety and integrity of the structure. In the event of an emergency, it is important to have an Emergency Action Plan (EAP) in place, with the last revision done in March 2020.

Tapps Lake Dike No 6 plays a vital role in the water management system, serving as a diversion from the White River. With its strategic location and design, the dam contributes to flood control efforts and provides a recreational outlet for the local community. As climate change continues to impact water resources, structures like Tapps Lake Dike No 6 will be essential in ensuring the resiliency of our water infrastructure.

StateNone
River / streamDiversion From White River
NID IDWA00423
Owner typePublic Utility
Primary purposeRecreation
Dam typeEarth
Year built1911
Dam length600 ft
Max storage43,000 AF
Normal storage41,000 AF
Surface area2,570.0 ac
Drainage area9.7 sq mi
Hazard potentialHigh
ConditionSatisfactory
Last inspectionWed, 19 Jul 2017 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 Tapps Lake Dike No 6 -- inflows here typically show up in storage 24-72 hours later.

Track Tapps Lake Dike No 6 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 Tapps Lake Dike No 6

Where does the data for Tapps Lake Dike No 6 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.