Reservoir/River Data

Readings for Monday, June 15, 2026

Lake & Reservoir Elevations

Location Today (Feet above Sea Level) 1 Week Ago 1 Month Ago 1 Year Ago
Lake McConaughy 3,220.8 = 700,500ac-ft (40.2% capacity) 3,223.0 3,229.2 3,233.7
Jeffrey Lake 2,758.4 2,758.4 2,757.2 2,758.1
Johnson Lake 2,618.3 2,618.3 2,615.9 2,618.2
Elwood Reservoir 2,599.7 2,600.4 2,598.7 2,598.8

River & Canal Flows

Station Today (Cubic Feet per Second) 1 Week Ago 1 Month Ago 1 Year Ago
Inflows to McConaughy 213 183 146 608
Total Outflows from McConaughy 3,030 3,010 1,232 3,110
North Platte at Keystone 1,190 1,180 242 1,280
Keystone Diversion 1,840 1,830 990 1,830
North Platte at North Platte 1,330 1,310 244 1,420
South Platte at Roscoe 3.17 7.47 7.47 128
South Platte at North Platte 137 152 149 244
Supply Canal Diversion 2,281 2,284 1,240 2,255
Platte at Overton 2,160 2,150 1,330 2,070
Platte at Kearney 1420 1970 1970 1490
Platte at Grand Island N/A 1630 41.3 1610

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.