Reservoir/River Data

Readings for Monday, April 20, 2026

Lake & Reservoir Elevations

Location Today (Feet above Sea Level) 1 Week Ago 1 Month Ago 1 Year Ago
Lake McConaughy 3,230.5 = 886,000ac-ft (50.8% capacity) 3,230.9 3,231.1 3,239.3
Jeffrey Lake 2,758.0 2,757.3 2,757.5 2,757.5
Johnson Lake 2,618.1 2,617.9 2,615.4 2,615.7
Elwood Reservoir 2,592.0 2,588.2 2,580.4 2,593.2

River & Canal Flows

Station Today (Cubic Feet per Second) 1 Week Ago 1 Month Ago 1 Year Ago
Inflows to McConaughy 419 437 703 627
Total Outflows from McConaughy 868 765 651 410
North Platte at Keystone 181 38 287 27
Keystone Diversion 687 727 364 383
North Platte at North Platte 322 330 597 339
South Platte at Roscoe 66.3 76.6 44.2 85.1
South Platte at North Platte 140 130 174 173
Supply Canal Diversion 656 1,119 927 1,057
Platte at Overton 887 915 738 608
Platte at Kearney 64.1 57.2 1910 278
Platte at Grand Island 275 349 1770 243

Charts

McConaughyInflows.png
McConaughy Historical Inflows
McConaughyOneMonth.png
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.