Fishing Report

John Martin Reservoir fishing

Colorado, USA Upper Arkansas watershed 38.073°, -103.028°
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Fish species
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Nearby gauges
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John Martin Reservoir -- Colorado fishing area
John Martin Reservoir Colorado · Upper Arkansas watershed
About this spot

John Martin Reservoir

John Martin Reservoir is one of the largest bodies of water in southeastern Colorado, USA, offering a variety of fish species such as walleye, crappie, catfish, and bass. The lake is surrounded by a state park, which offers camping, hiking, and wildlife viewing. Anglers looking for success should try to fish during the cooler months of fall, winter, and early spring, using jigs and live bait. Summer can be productive for catfish and carp, but the high temperatures can make fishing challenging. The best time to visit is in spring or fall, with average temperatures ranging from 40-70°F.
StateColorado
WatershedUpper Arkansas
Latitude38.0730°
Longitude-103.0280°
Fish species

What's biting at John Martin Reservoir

Species commonly reported here -- tap any card for techniques, target seasons, and other waters where it's been caught.

Detailed forecast

Plan your trip down to the hour

Same weather feed Snoflo's iOS app uses -- updated continuously from NOAA / yr.no.

Hourly detail

Next 5 days, hour by hour

Temperature line with weather symbols on top, snow + rain accumulation as columns, humidity as a dotted line.

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Deep dive

5-day forecast table

Every 3 hours, broken out across temperature, snow, rain, humidity, and wind. Each cell is colour-coded relative to the column min/max so trends jump out at a glance.

Time Condition Temp (°F) Snow (in) Rain (in) Humidity (%) Wind (mps) Wind dir
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Long-term outlook

15-day temperature & precipitation

Daily temperatures, snow, and rain projected over the next two weeks. Hover any point for the full breakdown.

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Live water

Nearby streamflow

USGS streamgauges within reach of John Martin Reservoir -- updated continuously from the National Water Information System.

Angling safety & ethics

Know the regulations
Check local fishing rules, seasons, size limits, and license requirements to ensure legal and sustainable angling.
Handle fish responsibly
Use wet hands, minimize air exposure, and release fish gently to improve survival rates when practicing catch-and-release.
Choose the right gear
Match your rod, line, and tackle to the species and conditions to increase success and reduce unnecessary harm to fish.
Respect the waterway
Avoid disturbing habitat, prevent bank erosion, and keep a safe distance from spawning areas to protect ecosystems.
Keep it clean
Pack out all line, hooks, bait containers, and trash. Discarded gear can injure wildlife and degrade waterways.

Set push alerts in the Snoflo app

Save John Martin Reservoir as a favorite, set a custom threshold (water temperature, streamflow, snowpack), and the iOS app will push the moment conditions cross.

FAQ

About John Martin Reservoir

What fish species are found at John Martin Reservoir?

Snoflo tracks the species commonly reported at John Martin Reservoir -- see the Fish Species panel above for the live list with images and links to per-species pages.

How fresh is the weather data on this page?

The hourly forecast updates throughout the day from the NOAA / yr.no public feeds. Streamflow data comes live from USGS streamgauges, also refreshed continuously.

Can I get alerts when conditions change?

Yes -- alerts are managed through the Snoflo iOS app. Favorite this area, set a threshold (water temperature, streamflow, snowpack), and you'll get a push the moment it crosses.

Do I need a fishing license?

Yes. Check your state agency's regulations for license requirements, seasons, size limits, and any waterbody-specific rules before fishing John Martin Reservoir.

How do I get to John Martin Reservoir?

Tap Open in map in the hero above to center the Snoflo interactive map on this area, or grab the coordinates from the location facts panel.

More fishing

Other angling spots near here

Snoflo-tracked fishing areas within driving distance of John Martin Reservoir.