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In addition to the usual functions of flood control and hydropower, this dam provides water for the surrounding communities.
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USACE
"The watershed basin for Beaver Lake covers 1186 miles [I presume they meant square miles.] (759,040 acres) and there are 449 miles of shoreline at the top of the conservation pool (1120’ m.s.l)."
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I could find only information on the reservoir on the USACE page, but this reference provides information on the dam itself.
"The 2,575-foot-long dam consists of a 1,333-foot-long concrete section keyed into a limestone bluff, 1,242 feet of earth and rock embankment, and three small earth and rock dikes that fill gaps between adjacent hills. The spillway section is 328 feet long. Maximum height of the dam above the streambed is 228 feet. Mean depth is fifty-eight feet, and the maximum depth is 216 feet. The structure contains 780,000 cubic yards of concrete and 1.6 million yards of rock and dirt embankment. Storage capacity is 1.95 million acre-feet, which includes flood control storage. At full conservation pool, or normal managed lake level, the reservoir covers 28,200 acres with a shoreline of 449 miles. The mean hydraulic retention time (the time it takes for water to cycle through the reservoir) is one and a half years....The construction and maintenance of Beaver Dam has not been without technical challenges. A large cavern a few hundred feet upstream of the dam site was discovered during initial excavation work and was filled with 200 cubic yards of grout material. The earth embankment also rests on the Price Mountain fault line, and the dam underwent seepage repairs from 1989 to 1994 at a cost of about $33.5 million." [
EncylopediaOfArkansas]
Four construction photos on the
USACE page.
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The powerhouse had two 56mw units.
May 2025 Flood:
The May 2025 Flood is spilling over into June.
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The City of Bentonville, Arkansas Government posted
Over the weekend, all 7 spillways at Beaver Lake were open — a rare and powerful sight! This massive release helps lower the lake after all the recent rain.What’s incredible is that even with all that water rushing into the White River, Beaver Lake still holds more than enough to supply Bentonville and much of Northwest Arkansas with drinking water. The water comes from the lake, and Beaver Water District does the important job of treating and preparing it for safe use in our homes. Nature’s power + human engineering = one impressive system. |
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| Hooked On Fishing, LLC posted 0:28 video |
There is a big pause between gates 4 and 5 opening, but 5 does finally go up.
Fourth gate goes up at 0:15. Fifth at 1:15. Sixth at 2:32. Seventh at 3:36.
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USACE, Little Rock District posted 4:18 video
Beaver Dam Spillway Gate Operations - May 20, 2025 The U.S. Army Corps of Engineers opened all spillway gates half a foot at Beaver Dam this morning to evacuate flood storage from recent rainfall. The spillway release combined with hydropower is around 7,500 cubic feet per second. Keep an eye on water levels by using the Little Rock District Water Levels app. You can download it from the Apple App Store or Google Play Store. Just search for Little Rock USACE. 🎥 by Julie Massey |
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