Colorado mammals

Sand Hills Pocket Gopher in Colorado

Geomys lutescens

Native to Colorado S5 Secure in Colorado

Not listed as nonindigenous in Colorado by USGS NAS; native to its Colorado range.

IUCN Red List status

NE – Not Evaluated

Not yet assessed against IUCN Red List criteria.

Sand Hills Pocket Gopher in Colorado, by the numbers

Common in Colorado 43rd most recorded of 154 mammals logged in Colorado

421 occurrence records

Records from 2000–2026.

421 total records count every Colorado occurrence from GBIF and iNaturalist; the map plots a georeferenced sample of 300; the monthly chart covers the 417 records with a full observation date.

When to look for the Sand Hills Pocket Gopher in Colorado

Most sightings fall in May.

417 Colorado occurrence records (iNaturalist and GBIF) by month of year, 2000–2026. Shows when the species is recorded, not a guarantee of presence.

Monthly Colorado records (table)
MonthRecords
January11
February25
March42
April23
May71
June32
July15
August49
September24
October59
November48
December18

Monthly sand hills pocket gopher occurrence records (iNaturalist and GBIF) in Colorado, 2000–2026.

Seasonality

Year-round in Colorado, with recorded sightings peaking in May, with a smaller rise in August and October–November.

Occurrence map

Where Sand Hills Pocket Gopher has been recorded in Colorado

300 records mapped · zoom and drag to explore

300 Colorado records mapped

Notable places to look

Park, forest, or monumentiNaturalist records
Cherry Creek Reservior / State Park 5
Chatfield State Park 1
Flagler 1
Bonny Lake State Park/South Republican State Wildlife Area 1
Bonny Lake State Park 1
Pawnee National Grassland 1

Protected places with the most sand hills pocket gopher sightings, from the USGS Protected Areas Database plus named mountain ranges, good spots to look, not a full breakdown, so they don't sum to the total.

Where it's recorded in Colorado

CountyRecords
Larimer County 107
Adams County 75
Weld County 48
Washington County 28
Denver County 27
Yuma County 23
Arapahoe County 19
Boulder County 18
Morgan County 13
Baca County 9
Fremont County 8
Elbert County 8
8 other counties 38

The complete county distribution, spread across 20 Colorado counties. Every occurrence record falls in one county, so these sum to the total. Counties from GBIF and US Census boundaries.

The sand hills pocket gopher is comparatively well represented in Colorado’s occurrence records for a burrowing rodent, with 421 records. Almost all come from museum specimens and database collections rather than sightings, since not one is an iNaturalist photograph of a live animal.

A sandy-soil specialist

Where the plains pocket gopher will dig a range of soils, the sand hills pocket gopher is a specialist of loose, sandy ground. Named for the Nebraska Sandhills, it reaches into the sandy plains of northeastern Colorado and the sand-sheet country along the northern Front Range fringe, across Larimer, Weld, Adams, and Washington counties. Its pale, sandy-tan coat matches that soil. Only recently split from the plains pocket gopher, it is separated as much by geography and ground type as by appearance.

A year-round life underground

Like every pocket gopher it is intensely fossorial and never hibernates, working its tunnels in all seasons. The spread of records across the calendar reflects decades of specimen collecting, not a seasonal rhythm; the animal itself is equally active and equally hidden the whole year round.

Status

NatureServe ranks the Colorado population secure. The species as a whole, though, is so recently recognized that it carries no global rank and has not been formally evaluated by the IUCN, so its wider standing is still an open question.

More mammals in Colorado in the atlas

Data & sources

The data and visualizations on this page draw on these open sources:

  • GBIFCC-BY 4.0occurrence records behind the range map, elevation, and record counts
  • iNaturalistCC0 / CC-BY / CC-BY-SAobservations, photos, and audio recordings
  • NatureServe ExplorerCC-BYthe state conservation rank
  • IUCN Red Listattributed factthe global conservation status
  • USGS NASpublic domainnative / introduced status
  • Natural Earthpublic domainthe relief basemap
  • USFSpublic domainnational-forest boundaries
  • USGS Protected Areas Databasepublic domainthe named parks, forests, and refuges behind "notable places to look"