COE update all lakes - 7/20

[Phil Lilley]

Here is the report for Monday morning. Please note that Table Rock has .9"

of flood storage availability and Bull Shoals only has .6" of availability.

This is the storage we are trying to balance and the reason Table Rock isn't

dropping much.

We do have a pretty good rain later in the week that could have more

negative impacts on us.

MONDAY MORNING UPDATE, 7/20.

Precipitation/Forecast. Only rain over the weekend was 0.78" over

Clearwater; No rain over Arkansas Basins (including Nimrod and Blue Mtn),

White River Basins, and Little River Basins; Moderate to light rainfall

forecasted over the next 3-days with heaviest rain forecasted to fall on

upper White River Basins. 1-Day QPF forecasts light rain over White River

Basin (0.5" or less); 2-Day QPF forecasts moderate rainfall over northern

1/3rd of Arkansas and lower half of Missouri with 1.73" bulls eye over Table

Rock; 3-Day QPF forecasts moderate amounts over White River Basins, and

light amounts over the remainder of SWL's basins. Light to trace amounts of

rainfall in the forecast through Friday. Temps forecasted to be extremely

hot Monday (hi's at or above 100), returning to seasonal norms Tuesday.

1-Day QPF: http://www.wpc.ncep.noaa.gov/qpf/fill_94qwbg.gif?1437395490549

2-Day QPF: http://www.wpc.ncep.noaa.gov/qpf/fill_98qwbg.gif?1437395559000

3-Day QPF: http://www.wpc.ncep.noaa.gov/qpf/fill_99qwbg.gif?1437395656467

1-3-Day QPF: http://www.wpc.ncep.noaa.gov/qpf/d13_fill.gif?1437395740004

Reservoirs with 25% flood storage in use. (Revised)

WHITE RIVER SYSTEM. None.

Reservoirs with 50% flood storage in use. (Revised)

WHITE RIVER SYSTEM. Table Rock, Norfork.

Reservoirs with 75% flood storage in use. (Revised)

WHITE RIVER SYSTEM. Beaver, Bull Shoals.

Reservoirs with 100% flood storage in use. (No change)

WHITE RIVER SYSTEM. None.

WHITE RIVER SYSTEM. All lakes remain in their respective flood pools; Bull

Shoals and Greers Ferry are falling slowly; Norfork is rising slowly, Beaver

and Table Rock are steady. Bull Shoals is above elevation 684.0 requiring

storage balancing between Table Rock and Bull Shoals. Downstream stages are

steady allowing increased releases from Bull Shoals up to allowable channel

capacity (regulating to 14' at Newport due to 4-Lake system using more than

70% fs). The three most critical projects are BV, TR, and BS with less than

0.3", 0.9", and 0.6" of runoff storage remaining in their respective flood

pools. Table Rock blocked open vacuum breaker vents because D.O. dropped

below 6 ppm in its tailwater.

Beaver: elev 1129.33 and steady (91.9% fs); target firm power (950 dsf).

Table Rock: elev 927.26 and rising (71.6% fs); 12-hour operation target 6.7k

dsf.

Bull Shoals: elev 692.25 (90.5% fs); target 12k dsf.

Norfork: elev 571.26 (60.6% fs); target firm power (1.35k dsf), using siphon

to meet minimum flow requirement.

Current stage at Newport is 14.07' and steady (14' regulating stage).

Jim Sandberg

Operations Project Manager

Table Rock Lake

[brother dave]

Very helpful, thanks