Reservoir/River Data

Readings for Tuesday, March 17, 2026

Lake & Reservoir Elevations

Location Today (Feet above Sea Level) 1 Week Ago 1 Month Ago 1 Year Ago
Lake McConaughy 3,231.1 = 898,100ac-ft (51.5% capacity) 3,230.9 3,230.5 N/A
Jeffrey Lake 2,757.8 2,757.2 2,756.3 2,757.7
Johnson Lake 2,617.9 2,618.4 2,616.6 2,615.8
Elwood Reservoir 2,580.5 2,581.0 2,582.1 2,588.3

River & Canal Flows

Station Today (Cubic Feet per Second) 1 Week Ago 1 Month Ago 1 Year Ago
Inflows to McConaughy 845 898 898 895
Total Outflows from McConaughy 391 404 536 421
North Platte at Keystone 281 293 266 23
Keystone Diversion 110 111 270 398
North Platte at North Platte 569 605 550 380
South Platte at Roscoe 26.7 33.9 124 104
South Platte at North Platte 165 159 238 228
Supply Canal Diversion 913 918 1,087 640
Platte at Overton 804 803 881 726
Platte at Kearney 487 498 1800 1210
Platte at Grand Island 810 752 998 947

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.