Reservoir/River Data

Readings for Monday, August 17, 2026

Lake & Reservoir Elevations

Location Today (Feet above Sea Level) 1 Week Ago 1 Month Ago 1 Year Ago
Lake McConaughy 3,204.1 = 427,900ac-ft (24.5% capacity) 3,205.7 3,213.3 3,224.4
Jeffrey Lake 2,758.5 2,758.1 2,758.2 2,757.9
Johnson Lake 2,619.0 2,617.5 2,617.5 2,618.4
Elwood Reservoir 2,592.5 2,593.9 2,596.3 2,596.5

River & Canal Flows

Station Today (Cubic Feet per Second) 1 Week Ago 1 Month Ago 1 Year Ago
Inflows to McConaughy 588 112 220 525
Total Outflows from McConaughy 1,841 2,522 2,720 1,974
North Platte at Keystone 551 942 1,070 404
Keystone Diversion 1,290 1,580 1,650 1,570
North Platte at North Platte 968 715 692 342
South Platte at Roscoe 0.09 0.09 1.40 2.74
South Platte at North Platte 588 112 220 525
Supply Canal Diversion 2,184 2,149 2,252 1,954
Platte at Overton N/A 24.2 23.0 25.8
Platte at Kearney 63.7 12.8 18.9 83.8
Platte at Grand Island 336 70.0 93.7 82.8

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.