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John Martin Reservoir at Caddoa water level

Reservoir, John Martin Reservoir, Colorado, United States

Directions

Right now

Latest reading

Surface elevation

3,805.59ft Steady over the last 24 hours

3,500 4,000 4,500

History

History
3,805.603,805.65ftOct 16Oct 16Oct 17Oct 18Oct 193,805.603,805.65ftOct 16Oct 17Oct 19
Surface elevation

What this means

John Martin Reservoir at Caddoa reads 3,805.59 ft as of Oct 19, 2026, 03:15 PM MDT. There is no published reference for this reservoir yet, so we can't say whether that is high or low for the season.

It has barely moved over the past 24 hours. In the last month it has stayed between 3,805.59 ft and 3,805.70 ft.

The agency publishes no normal range for this gauge yet, so we show the trend only. How to read levels

On the water at John Martin Reservoir at Caddoa

Watch the chart rather than the single number; it shows whether the shoreline is moving.

Wear a life jacket on the water. Most boating deaths involve people who were not wearing one.

Weather at the gauge

Rain in the last 3 days: 0.06 in.

17 Sat 78° 29° – Wind 13 mph
18 Sun 72° 36° – Wind 8 mph
19 Mon 69° 43° – Wind 9 mph
20 Tue 78° 55° – Wind 15 mph
21 Wed 79° 59° – Wind 16 mph
22 Thu 86° 65° 0.01 in Wind 24 mph
23 Fri 77° 64° 0.04 in, 22% Wind 26 mph

Forecast: Open-Meteo

Sunrise 07:05 AM Sunset 06:10 PM Daylight 11 hr, 5 min First quarter 62%

Map

Nearby gauges

Gauge Level Compared with normal 24 hours Distance
Arkansas River below John Martin ReservoirRiver gauge, Arkansas River 24.9 cfs Low −55.6 cfs 0.3 mi
Purgatoire River near Las AnimasRiver gauge, Purgatoire River 2.62 ft Below flood stage +0.18 ft 15 mi
Arkansas River at Las AnimasRiver gauge, Arkansas River 4.7 cfs Very low ±0 15 mi
Arkansas River at LamarRiver gauge, Arkansas River 5.74 ft Below flood stage +0.01 ft 18 mi
Arkansas River near GranadaRiver gauge, Arkansas River 76.7 cfs Normal −2.3 cfs 34 mi
Timpas Creek at Mouth near SwinkRiver gauge, Timpas Creek 30.8 cfs Very low −2.3 cfs 39 mi
Purgatoire River at Rock Crossing near TimpasRiver gauge, Purgatoire River 9.6 cfs Low −4.1 cfs 47 mi

Questions and answers

Is John Martin Reservoir at Caddoa really 3,805.59 ft deep?

No. 3,805.59 ft is the height of the water surface above sea level (or the agency's vertical datum), not the depth of the water.

What is the water level of John Martin Reservoir at Caddoa today?

On Oct 19, 2026, 03:15 PM MDT, the surface elevation was 3,805.59 ft. Steady over the last 24 hours.

Is John Martin Reservoir at Caddoa rising or falling?

Steady over the last 24 hours.

Is the level of John Martin Reservoir at Caddoa normal?

The agency publishes no normal range for this gauge yet, so we show the trend only.

How often is this data updated?

The U.S. Geological Survey publishes a new reading every 15 minutes. This page refreshes within minutes of each update.

Where does this data come from?

The values come directly from the U.S. Geological Survey, the official operator of this gauge, and are in the public domain. We do not estimate or model live values.

For specialists

Station codes, datum, parameters, data quality and downloads
Operator
U.S. Geological Survey
Station code
usgs:07130000 (Agency page)
Coordinates
38.06806, -102.93742 (WGS84)
Vertical datum
NGVD29
Update interval
every 15 minutes
Licence
Public domain. Data: U.S. Geological Survey (USGS), provisional data subject to revision

Published series

ParameterLast valueTime (UTC)Quality
Surface elevation 3,805.59 ft 2026-10-19 21:15 Provisional

Download

Embed this gauge

Add a live card for this gauge to your website. It updates on its own and links back here.

How to cite

U.S. Geological Survey: John Martin Reservoir at Caddoa (usgs:07130000). Accessed October 19, 2026 via Nivelmap, https://nivelmap.com/en/united-states/colorado/john-martin-reservoir-at-caddoa

How we check values

Each reading is stored as published. We hold back values that jump faster than physically plausible and show the measurement time with every value.