Water Nerd

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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

November 27 2025 Water Level

Today's elevation is 4867.05 feet above sea level, 191391 acre-feet, 53.61% capacity. This is...

1.32 inches higher and 407 acre-feet more than yesterday. The average increase for this time of year is 0.21 inches.
10.68 inches higher and 3281 acre-feet more than last week.
18.36 inches higher and 5618 acre-feet more than last month.
39.96 inches lower and 12548 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 195.00 inches lower and 67650 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 21.00 inches higher and 6199 more acre-feet than the low.

The historic average elevation of the lake for this day is 4857.30 ft. Today's elevation is 9.75 feet higher than the average.
The historic average volume of the lake for this day is 169998.65 acre-feet. Today's volume is 21392.35 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 353 cubic feet per second.
The historic average Arkansas River flow at Portland, CO for yesterday is 441.1951 cubic feet per second. Yesterday's flow is 88.1951 cubic feet per second less than the historic average.

Yesterday's average Arkansas River flow at Pueblo Reservoir's dam was 81 cubic feet per second.
The historic average Arkansas River flow at Pueblo Reservoir's dam for yesterday is 1938.7073 cubic feet per second. Yesterday's flow is 1857.7073 cubic feet per second less than the historic average.