Reservoir/River Data

Readings for Monday, September 21, 2026

Lake & Reservoir Elevations

Location Today (Feet above Sea Level) 1 Week Ago 1 Month Ago 1 Year Ago
Lake McConaughy 3,201.3 = 389,200ac-ft (22.3% capacity) 3,200.7 3,203.5 3,222.4
Jeffrey Lake 2,758.7 2,757.9 2,757.8 2,757.8
Johnson Lake 2,618.3 2,618.0 2,618.1 2,611.4
Elwood Reservoir 2,584.9 2,585.0 2,593.0 2,591.0

River & Canal Flows

Station Today (Cubic Feet per Second) 1 Week Ago 1 Month Ago 1 Year Ago
Inflows to McConaughy 384 363 413 2,010
Total Outflows from McConaughy 168 600 1,453 263
North Platte at Keystone 2 95 373 214
Keystone Diversion 166 505 1,080 49
North Platte at North Platte 487 376 585 588
South Platte at Roscoe 7.82 4.22 1.83 107
South Platte at North Platte 384 363 413 2,010
Supply Canal Diversion 826 583 1,520 986
Platte at Overton 107 17.2 21.1 N/A
Platte at Kearney 625 91.0 67.7 207
Platte at Grand Island 65.4 65.4 531 625

Charts

McConaughyInflows.png
McConaughy Historical Inflows
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McConaughy One Month
McConaughyOneYear.png
McConaughy One Year
McConaughySince1941.png
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.