Reservoir/River Data

Readings for Wednesday, August 20, 2025

Lake & Reservoir Elevations

Location Today (Feet above Sea Level) 1 Week Ago 1 Month Ago 1 Year Ago
Lake McConaughy 3,223.9 = 757,700ac-ft (43.5% capacity) 3,225.2 3,228.6 3,230.9
Jeffrey Lake 2,758.1 2,758.4 2,758.1 2,757.9
Johnson Lake 2,618.3 2,618.1 2,618.3 2,618.3
Elwood Reservoir 2,596.2 2,597.1 2,599.2 2,594.2

River & Canal Flows

Station Today (Cubic Feet per Second) 1 Week Ago 1 Month Ago 1 Year Ago
Inflows to McConaughy 531 729 172 1,090
Total Outflows from McConaughy 1,837 1,907 1,699 1,973
North Platte at Keystone 407 457 349 563
Keystone Diversion 1,430 1,450 1,350 1,410
North Platte at North Platte 322 739 286 509
South Platte at Roscoe 6.43 20.2 11.1 91.3
South Platte at North Platte 146 164 143 102
Supply Canal Diversion 1,901 2,270 1,629 1,679
Platte at Overton 1,750 2,030 1,620 1,600
Platte at Kearney 43.9 65.1 446 268
Platte at Grand Island 242 390 733 1120

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.

Lake McConaughy Weekly Temperature Readings

 Data is acquired from Nebraska DNR and USGS web services and CNPPID historical readings.