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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
September 12 2025 Water Level
Today's elevation is 4867.13 feet above sea level, 191687 acre-feet, 53.69% capacity. This is...
0.72 inches lower and 222 acre-feet less than yesterday. The average decrease for this time of year is 0.07 inches. 6.72 inches lower and 2080 acre-feet less than last week. 44.28 inches lower and 13956 acre-feet less than last month. 27.48 inches lower and 8576 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 194.04 inches lower and 67354 less acre-feet than the high.
The lake reached its low of 4867.1 ft elevation and a volume of 191687.0 acre-feet on 9/12/2025. Today's level is 0.36 inches higher and 0 more acre-feet than the low.
The historic average elevation of the lake for this day is 4855.16 ft. Today's elevation is 11.97 feet higher than the average. The historic average volume of the lake for this day is 162517.58 acre-feet. Today's volume is 29169.42 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 240 cubic feet per second. The historic average Arkansas River flow at Portland, CO for yesterday is 403.9268 cubic feet per second. Yesterday's flow is 163.9268 cubic feet per second less than the historic average.
Yesterday's average Arkansas River flow at Pueblo Reservoir's dam was 72 cubic feet per second. The historic average Arkansas River flow at Pueblo Reservoir's dam for yesterday is 371.6829 cubic feet per second. Yesterday's flow is 299.6829 cubic feet per second less than the historic average.