Reservoir/River Data

Readings for Monday, May 18, 2026

Lake & Reservoir Elevations

Location Today (Feet above Sea Level) 1 Week Ago 1 Month Ago 1 Year Ago
Lake McConaughy 3,228.8 = 852,200ac-ft (48.9% capacity) 3,229.5 3,230.7 3,237.9
Jeffrey Lake 2,758.6 2,755.5 2,757.0 2,757.9
Johnson Lake 2,615.9 2,617.3 2,618.0 2,617.3
Elwood Reservoir 2,598.8 2,598.1 2,591.0 2,597.0

River & Canal Flows

Station Today (Cubic Feet per Second) 1 Week Ago 1 Month Ago 1 Year Ago
Inflows to McConaughy 168 186 417 410
Total Outflows from McConaughy 1,494 716 849 2,512
North Platte at Keystone 234 244 153 802
Keystone Diversion 1,260 472 696 1,710
North Platte at North Platte 240 269 294 1,030
South Platte at Roscoe 23.0 36.6 49.9 25.1
South Platte at North Platte 148 146 131 200
Supply Canal Diversion 1,883 1,096 1,094 2,244
Platte at Overton 1,680 875 816 2,070
Platte at Kearney 37.4 27.6 39.6 33.9
Platte at Grand Island 102 70.0 202 4.91

Charts

McConaughyInflows.png
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.