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This is the "Water Nerd" page! This page contains all kinds of information about today's water levels compared to historic
levels, that only data nerds will appreciate.
Pueblo Reservoir has a maximum capacity of 357700 acre-feet at an elevation of 4898.7 feet above see level. However federal
rules state that the reservoir can't hold more than 257000 acre-feet after April 15 to ensure the dam can contain a flood.
Detailed Pueblo Reservoir Status
December 12 2025 Water Level
Today's elevation is 4868.66 feet above sea level, 197394 acre-feet, 55.29% capacity. This is...
1.20 inches higher and 375 acre-feet more than yesterday. The average increase for this time of year is 0.12 inches. 8.52 inches higher and 2658 acre-feet more than last week. 37.92 inches higher and 11694 acre-feet more than last month. 56.04 inches lower and 18190 acre-feet less than than last year.
For 2025...
The lake reached its peak of 4883.3 ft elevation and a volume of 259041.0 acre-feet on 3/13/2025 Today's level is 175.68 inches lower and 61647 less acre-feet than the high.
The lake reached its low of 4865.3 ft elevation and a volume of 185192.0 acre-feet on 11/7/2025. Today's level is 40.32 inches higher and 12202 more acre-feet than the low.
The historic average elevation of the lake for this day is 4858.61 ft. Today's elevation is 10.05 feet higher than the average. The historic average volume of the lake for this day is 173019.69 acre-feet. Today's volume is 24374.31 acre-feet more than the historic average.
Yesterday Water Flow Data
Yesterday's avereage flow for the Arkansas River at Portland, CO (above and into Pueblo Reservoir) was 349 cubic feet per second. The historic average Arkansas River flow at Portland, CO for yesterday is 458.4390 cubic feet per second. Yesterday's flow is 109.439 cubic feet per second less than the historic average.
Yesterday's average Arkansas River flow at Pueblo Reservoir's dam was 80 cubic feet per second. The historic average Arkansas River flow at Pueblo Reservoir's dam for yesterday is 138.0488 cubic feet per second. Yesterday's flow is 58.0488 cubic feet per second less than the historic average.