Reservoir/River Data

Readings for Friday, September 11, 2026

Lake & Reservoir Elevations

Location Today (Feet above Sea Level) 1 Week Ago 1 Month Ago 1 Year Ago
Lake McConaughy 3,201.2 = 387,800ac-ft (22.2% capacity) 3,201.2 3,205.4 3,221.6
Jeffrey Lake 2,758.2 2,757.6 2,758.2 2,755.4
Johnson Lake 2,618.1 2,618.0 2,617.4 2,615.7
Elwood Reservoir 2,585.0 2,585.2 2,593.4 2,591.4

River & Canal Flows

Station Today (Cubic Feet per Second) 1 Week Ago 1 Month Ago 1 Year Ago
Inflows to McConaughy 519 842 107 1,110
Total Outflows from McConaughy 674 1,156 2,630 1,093
North Platte at Keystone 163 397 1,050 293
Keystone Diversion 511 759 1,580 800
North Platte at North Platte 455 540 708 353
South Platte at Roscoe 0.08 0.04 0.09 24.1
South Platte at North Platte 519 842 107 1,110
Supply Canal Diversion 596 832 2,153 911
Platte at Overton 21.4 22.5 29.4 23.2
Platte at Kearney 88.1 2.46 7.71 421
Platte at Grand Island 9.49 26.7 26.0 899

Charts

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McConaughy Historical Inflows
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McConaughy One Month
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McConaughy One Year
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Lake McConaughy Historical
JohnsonOneMonth.png
Johnson Lake One Month
Johnson5Years.png
Johnson Lake Historical
ElwoodWaterYear.png
Elwood Reservoir One Year
Elwood5Years.png
Elwood Reservoir Historical
JeffreyOneMonth.png
Jeffrey Lake One Month
Jeffrey5Years.png
Jeffrey Lake Historical

Flows and elevations are provisional. Readings from measuring equipment may be affected during icing conditions.

Colors of Water Tool

Lake McConaughy Weekly Temperature Readings

 Data is acquired from Nebraska DNR and USGS web services and CNPPID historical readings.