Monument Reservoir Fishing
A 86-acre Colorado reservoir in Las Animas County at 8,588 feet.
Pick for brown troutPiscifun Carbon X ultralight spinning reel28% OFFSale $57.99 Photo of Trinidad Lake: Jeffrey Beall, CC BY 4.0
A quick portrait of Monument Reservoir
Measured from the CPW water layer, Monument Reservoir is a reservoir of some 86 acres in Las Animas County. Expect thin air: this water sits near 8,588 feet. The surrounding property is City of Trinidad – Monument Lake Resort, per CPW. Stonewall Gap is the nearest Census place to the shore, near 4 miles off. Fisheries staff of the CPW Southeast Region oversee it.
The CPW species field names brown trout, cutbow, kokanee salmon, rainbow trout, splake and tiger trout. Craft permitted, per CPW: Motor boats (gasoline). Atlas notes: easy to reach, medium pressure. On ice: ice fishing listed as yes.
CPW Fishing Atlas 2025 layers (waterbody outline, Boatable Waters, fishing locations), Census places, retrieved October 25, 2026.
For the brown trout herePiscifun Carbon XT ultralight spinning reel25% OFFSale $59.99 What anglers catch at Monument Reservoir
Listed fish for Monument Reservoir, each linked where Colorado has a species page.
CPW Boatable Waters species field, CPW state records and stocking report, retrieved October 25, 2026.
Ramp access for Monument Reservoir
For Monument Reservoir, the ramp layer is empty; nearby ramps are listed.
Mapped access at Monument Reservoir
- Monument Reservoir fishing access near Stonewall Gapeasy access, stocked: catchable trout and sub-catchables, 8,588 ft
Boat ramps in reach of Monument Reservoir
- North Lake SWANorth Lake, 2 miles north
CPW boat ramp and Fishing Atlas fishing location layers, retrieved October 25, 2026.
Limits a warden checks at Monument Reservoir
| Species | Bag and possession | Season |
|---|---|---|
| Trout, arctic char, grayling, salmon and whitefish (not kokanee) | Daily bag 4, possession 8, in aggregate | Open all year, day and night, unless a special regulation says otherwise |
| Brook trout 8 inches or less (bonus) | Daily bag 10, possession 10 | Open all year, day and night, unless a special regulation says otherwise |
| Kokanee salmon | Daily bag 10, possession 10 | Open all year, day and night, unless a special regulation says otherwise |
| Walleye, saugeye and sauger | Daily bag 10, possession 10, in aggregate | Open all year, day and night, unless a special regulation says otherwise |
| Largemouth, smallmouth and spotted bass | Daily bag 5, possession 5, in aggregate | Open all year, day and night, unless a special regulation says otherwise |
| White bass, striped bass and wiper | Daily bag 20, possession 20, in aggregate | Open all year, day and night, unless a special regulation says otherwise |
| Channel, flathead and blue catfish | Daily bag 10, possession 10, in aggregate | Open all year, day and night, unless a special regulation says otherwise |
| White and black crappie | Daily bag 20, possession 20, in aggregate | Open all year, day and night, unless a special regulation says otherwise |
| Bluegill and other sunfish | Daily bag 20, possession 20, in aggregate | Open all year, day and night, unless a special regulation says otherwise |
| Yellow perch | Daily bag 20, possession 20 | Open all year, day and night, unless a special regulation says otherwise |
| Tiger muskie | Daily bag 1, possession 1; at least 36 inches long | Open all year, day and night, unless a special regulation says otherwise |
| Northern pike and bullhead | No bag or possession limit | Open all year, day and night, unless a special regulation says otherwise |
For the statewide limits chart, Monument Reservoir counts as in the Arkansas and South Fork Republican drainages water. Unless listed in the brochure special regulations, Monument Reservoir follows the statewide chart.
Local fishing rules at Monument Reservoir
| Water as printed | Rule | Brochure |
|---|---|---|
| Monument Reservoir | Snagging kokanee permitted Oct. 1–Dec. 31. | p. 29 |
Special regulations as printed in the 2026 Colorado Fishing brochure (CPW, season March 1, 2026 to March 31, 2027), pp. 11 to 39, checked against CPW Chapter W-1 (as approved 13 November 2025); retrieved October 2026.
Statewide bag and possession chart, 2026 Colorado Fishing brochure (CPW, season March 1, 2026 to March 31, 2027), p. 10, retrieved October 25, 2026.
Stocking report listings for Monument Reservoir
Monument Reservoir appears 23 listings on the CPW trout report, most recently August 21, 2026.
| Report date | What CPW lists |
|---|---|
| August 21, 2026 | catchable trout, CPW Southeast Region |
| August 7, 2026 | catchable trout, CPW Southeast Region |
| June 19, 2026 | catchable trout, CPW Southeast Region |
| June 12, 2026 | catchable trout, CPW Southeast Region |
| June 5, 2026 | catchable trout, CPW Southeast Region |
| May 15, 2026 | catchable trout, CPW Southeast Region |
| May 1, 2026 | catchable trout, CPW Southeast Region |
| March 20, 2026 | catchable trout, CPW Southeast Region |
| November 14, 2025 | catchable trout, CPW Southeast Region |
| September 19, 2025 | catchable trout, CPW Southeast Region |
| September 19, 2025 | catchable trout, CPW Southeast Region |
| September 5, 2025 | catchable trout, CPW Southeast Region |
CPW Fish Stocking Report (catchable trout of about 10 inches; the date is when CPW added the water to its weekly list), 2024 to October 2026, retrieved October 25, 2026. Colorado stocking.
Nearby water compared with Monument Reservoir
| Lake | Distance | Acres | Elevation ft | Boat ramps | On the trout report |
|---|---|---|---|---|---|
| Monument Reservoir | 86 | 8,588 | 0 | yes | |
| North Lake | 2 miles north | 105 | 8,562 | 1 | yes |
| Wahatoya Lake Reservoir | 21 miles north | 27 | 7,093 | 0 | yes |
| Daigre Reservoir | 21 miles north | 14 | 7,058 | 0 | yes |
| Sanchez Reservoir | 22 miles southwest | 1,457 | 8,272 | 1 | |
| Mountain Home Reservoir | 22 miles northwest | 206 | 8,149 | 2 | yes |
CPW Fishing Atlas, ramp layer and stocking report, retrieved October 25, 2026.
Within a short drive of Monument Reservoir
Further reservoirs a short haul from Monument Reservoir
- North Lake2 miles north
- Wahatoya Lake Reservoir21 miles north
- Daigre Reservoir21 miles north
- Sanchez Reservoir22 miles southwest
- Mountain Home Reservoir22 miles northwest
Where to stay for a Monument Reservoir trip
- Trinidad31 miles
- Walsenburg32 miles
Which county pages list Monument Reservoir
- Las Animas Countyseat: Trinidad
Piscifun reels and grips for Monument Reservoir
.JPG){kind=link}
Piscifun and Amazon links are affiliate links; the site earns a commission on qualifying purchases.
A camera tour of the water by Monument Reservoir
Photo: JustTooLazy, CC BY 2.0
Photo: Jeffrey Beall, CC BY 4.0
Straight answers about Monument Reservoir
Which CPW region covers Monument Reservoir?
The outline falls in Las Animas County, CPW Southeast Region, about 4 miles from Stonewall Gap.
How many acres does the CPW outline give Monument Reservoir?
Around 86 acres of water, at about 8,588 feet.
Does Monument Reservoir have a CPW-mapped boat ramp?
None on file; see the nearby list.
Which fish does CPW list at Monument Reservoir?
Fish on the list: brown trout, cutbow, kokanee salmon, rainbow trout, splake, tiger trout and trout.
Are there extra rules at Monument Reservoir?
Trout, arctic char, grayling, salmon and whitefish (not kokanee): Daily bag 4, possession 8, in aggregate. It has its own brochure entry too, printed above.
Is a second-rod stamp needed at Monument Reservoir?
Fishing two lines at once takes the $14.24 second-rod stamp on top of the license; adult residents pay $44.87 for the license and nonresidents $124.01.
Are catchable trout released into Monument Reservoir?
Stocking report: 23 listings on the CPW catchable trout report (8 in 2026, 8 in 2025, 7 in 2024); latest August 21, 2026.
Is there a fly shop near Monument Reservoir?
Every shop on our Colorado list is more than 30 miles off.
Is Monument Reservoir fished through the ice?
CPW shows ice fishing listed as yes; carry picks and test thickness.
Circle a weekend for Monument Reservoir
Check the bag before a fish goes on the stringer.