US Army Corps of Engineers
Little Rock District Website

Water Levels

Sun shining on the water at Blue Mountain Lake
Water going through spillway during high water in 2008.
Enjoy the beautiful view of Nimrod Dam while picnicking.

Project Operating Data (Reservoirs)



CAPACITY (acre-ft)



Top Flood Pool     1130

Top Power Pool  1120.43

Bot Power Pool    1077

Flood Control     259,600

Power   936,500

Flood Control
Water Supply

Table Rock

Top Flood Pool       931

Top Power Pool       915

Bot Power Pool        881

Flood Control     760,000

Power   1,181,500

Flood Control
Water Supply

Bull Shoals

Top Flood Pool       695

Top Power Pool      659

Bot Power Pool       628.5

Flood Control   2,360,000

Power 1,003,000

Flood Control
Water Supply
Minimum Flows


Top Flood Pool       580

Top Power Pool      553.75

Bot Power Pool       510

Flood Control      731,800

Power    707,000

Flood Control
Water Supply
Minimum Flows

Greers Ferry

Top Flood Pool       487

Top Power Pool  462.04

Bot Power Pool       435

Flood Control     924,600

Power   725,900

Flood Control
Water Supply


Top Flood Pool       567

Top Cons Pool        494

Flood Control      391,000

Flood Control

Blue Mountain

Top Flood Pool       419

Top Cons Pool        384

Flood Control      257,900

Flood Control


Top Flood Pool       373

Top Cons Pool        342

Flood Control      307,000

Flood Control

Water Supply


Top Flood Pool     473.5

Top Cons Pool       437

Top Inactive Pool   415

Flood Control     101,300

Water Supply       25,550

Flood Control
Water Supply
Water Quality


Top Flood Pool       569

Top Cons Pool        502

Top Inactive Pool  464.5

Flood Control     188,750

Water Supply      29,312

Flood Control
Water Supply
Water Quality


Top Flood Pool     557.5

Top Cons Pool        526

Top Inactive Pool   512

Flood Control      67,100

Water Supply      10,100
Stream Flow           4,500

Flood Control
Water Supply
Water Quality


Top Flood Pool       287

Top Cons Pool       259.2

Top Inactive Pool    252

Flood Control   1,649,960

Water Supply     152,920

Flood Control
Water Supply
Water Quality

Project Operating Data (River)

Pool limits for the projects located on the Arkansas River are designed to keep the water levels in the river deep enough to allow for navigation up and down the river.  These pool limits DO NOT provide for any type of flood control.  The values for the pool limits provide a range of flow dependent elevations at which the project should be maintaining it's pool.

  The table below illustrates the what the pool limits are for each of the district's projects along the Arkansas River at various flowrates.


Inflow (cfs) 0-45,000 45,000-100,000 100,000+ open river


Flowrate (cfs)

Lock and Dam #13 (Trimble) 391.0-392.0 **based on tailwater **based on tailwater 135,000
Lock and Dam #12 (Ozark/Jetta) 370.0-372.5 371.0-372.0 371.0-372.0 360,000
Lock and Dam #10 (Dardanelle) 336.0-338.2 337.0-338.0 337.0-338.0 600,000
Lock and Dam #9 (Ormond) 284.0-287.00 284.0-286.0 284.0-286.0 150,000
Lock and Dam #8 (Toad Suck) 264.8-265.3 264.0-265.0 263.0-265.0 85,000
Lock and Dam #7 (Murray) 248.8-249.3 248.0-249.0 247.0-249.0 230,000
Lock and Dam #6 (Terry) 230.8-231.3 230.0-231.0 230.0-231.0 175,000
*Lock and Dam #5 212.8-213.3 212.0-213.0 211.0-213.0 170,000
Lock and Dam #4 (Sanders) 195.8-196.3 195.0-196.0 194.0-196.0 150,000
Lock and Dam #3 (Hardin) 181.8-182.3 181.0-182.0 180.0-182.0 130,000
*Dam #2 (Mills) 161.8-162.3 161.0-162.0 160.5-162.0 315,000
*  Seasonal pool limits click here.
**  Pool elevations based on tailwater click here.


Other Sites of Interest

·        The National Weather Service (NWS) is the agency responsible for issuing river forecasts and flood warnings for the United States

·        Generation Schedule - Southwestern Power Administration (Southwestern) is an agency of the U.S. Department of Energy responsible for marketing the hydroelectric power produced at Corps of Engineers multipurpose dams.  By law, the power and associated energy are marketed to publicly held entities such as rural electric cooperatives and municipal utilities.

·        U.S. Geological Survey (USGS) investigates the occurrence, quantity, quality, distribution, and movement of surface and underground waters and disseminates the data to the public, State and local governments, public and private utilities, and other Federal agencies involved with managing our water resources.