| John Martin Reservoir State Park | |
| Map: | USA Colorado |
| Map Width: | 260 |
| Location: | Bent County, Colorado, USA |
| Nearest City: | Las Animas, CO |
| Coordinates: | 38.0747°N -102.9306°W |
| Area: | 13176acres |
| Established: | 2001 |
| Visitation Num: | 293,698 |
| Visitation Year: | 2021 |
| Visitation Ref: | [1] |
| Governing Body: | Colorado Parks and Wildlife |
John Martin Reservoir State Park is a state park in Colorado.[2] It contains John Martin Reservoir, which is the second largest body of water in Colorado by capacity.[3] It is also known for being a prime birdwatching location.[4] Bent County, Colorado has been documented to have over 400 different species of birds.[5] The namesake reservoir of the park is created by a 118adj=midNaNadj=mid and 2.6adj=midNaNadj=mid, which goes by the name of John Martin Dam.[6]
Colorado Parks and Wildlife officials released thirty black-footed ferrets into a prairie dog colony in the nearby Southern Planes Preserve in 2022.[7]
According to the Köppen Climate Classification system, John Martin Dam has a cold semi-arid climate, abbreviated "BSk" on climate maps. The hottest temperature recorded at John Martin Dam was 115F on July 20, 2019, while the coldest temperature recorded was -27F on January 30, 1949, January 18 - 19, 1984 and February 15, 2021. The 115F reading is the highest reliably measured temperature ever recorded in the state of Colorado.[8]