Buying land in Dolores County, Colorado: what to check
Dolores County covers 1,067 square miles of land and 1 of water in Colorado, with about 2,467 residents in 2024 (up 6.1% since 2020). The 2020 Census counted 100% of its land as rural and 0% of residents as living in urban areas. Farms operate 24% of the county's land. Below: how much of Dolores County floods, what its soils allow, what farmland is worth and how often it's in drought, from free public data with every source linked.
Dolores County at a glance
In the 100-year floodplain
under 1%
About the state's county median (under 1%)
Hydric (wetland-type) soils
1.3%
Below the state's county median (1.7%)
Farm land value, 2022
$3,270/acre
Above the state's county median ($2,779)
What to check before buying land in Dolores County
Ordered by what Dolores County's numbers point to. Every parcel differs, so treat this as where to look first.
1.Budget for a perc test and maybe an engineered septic
USDA rates 92% of Dolores County's mapped soils "very limited" for conventional septic absorption fields and under 1% "not limited".
Without city sewer you need a septic permit from the county or state health department. Make the offer contingent on a passing soil or perc test; mound and aerobic systems can cost several times a conventional one.
2.Check slope where you'd build and where the driveway goes
60% of Dolores County's mapped soils have an average slope over 15% (USDA SSURGO).
Steep ground means grading, retaining walls, longer driveways and erosion control. Compare the slope at the house site and along the access route, not just the parcel average.
3.Find out where the water comes from
At least half of Dolores County was in severe drought (D2) or worse in 24% of the 262 weekly U.S. Drought Monitor maps from 2021 to 2026. Colorado allocates water by permit or water right, so a well or pond isn't automatic.
Ask whether the land has a public water connection, an existing well (and its log and yield), or neighbors' well depths from the state well database. For a new well, check permits and typical depth with the state agency first.
4.Confirm legal road access and power
The 2020 Census classified 100% of Dolores County's land area as rural.
Rural tracts are often sold without recorded access or a power line nearby. Get the title company to confirm a recorded easement or public road frontage, and ask the electric co-op what a line extension costs.
5.Sanity-check the price per acre
Farm real estate in Dolores County averaged $3,270 an acre including buildings in the 2022 Census of Agriculture, and 5.1% of its mapped soils are prime or of statewide importance.
Compare the asking price with recent sales of similar tracts, not the county average, which mixes cropland, pasture, timber and homesites. If an ag tax valuation applies, ask what the rollback taxes would be if you change the use.
6.Confirm the flood zone at your exact spot
under 1% of the county's area is in the 1%-annual-chance (100-year) floodplain FEMA's National Risk Index uses for inland flooding; 1% of its mapped soils flood occasionally or frequently.
Even where little of the county floods, creeks and low spots do. Check the FEMA zone at the building site and the driveway route.
Flood zones, wetlands and water in Dolores County
- Area in the 1%-annual-chance (100-year) floodplain
- under 1%, 11th lowest of 64 in Colorado FEMA National Risk Index
- Mapped soils that flood occasionally or frequently
- 1% USDA NRCS Web Soil Survey (SSURGO)
- Hydric soils (a federal wetland indicator)
- 1.3% USDA NRCS Web Soil Survey (SSURGO)
- Poorly or very poorly drained soils
- 1% USDA NRCS Web Soil Survey (SSURGO)
- Surface water (lakes, rivers, reservoirs)
- 1 sq mi Census 2024 Gazetteer Files
- Drought on 2026-10-27
- 0% moderate or worse, 0% severe or worse U.S. Drought Monitor county statistics
The floodplain share is the area FEMA's National Risk Index counts as exposed to inland flooding, mostly mapped 100-year flood zones. It says how common flood-prone land is in Dolores County, not whether a given parcel floods. For that, look up the zone at your exact point on the FEMA Flood Map Service Center or run the free check.
Soils and terrain
- Prime farmland
- 0% USDA NRCS Web Soil Survey (SSURGO)
- Prime only if drained, irrigated or protected
- 5.2% USDA NRCS Web Soil Survey (SSURGO)
- Farmland of statewide importance
- 5.1% USDA NRCS Web Soil Survey (SSURGO)
- Average slope over 15%
- 60% USDA NRCS Web Soil Survey (SSURGO)
- Very limited for septic absorption fields
- 92% USDA NRCS Web Soil Survey (SSURGO)
- Not limited for septic absorption fields
- under 1% USDA NRCS Web Soil Survey (SSURGO)
Shares of Dolores County's soil-surveyed land (about 680,623 acres, open water excluded), using each map unit's dominant condition in USDA's SSURGO soil survey. Soils change within a few hundred feet, so the soil at your building site is what matters.
Farms and land use
- Farms (2022)
- 264 USDA NASS, 2022 Census of Agriculture
- Share of the county's land in farms
- 24% USDA NASS, 2022 Census of Agriculture
- Average farm size
- 611 acres (median 163) USDA NASS, 2022 Census of Agriculture
- Average value of land and buildings
- $3,270 per acre, 25th highest of 63 in Colorado USDA NASS, 2022 Census of Agriculture
- Cropland
- 81,279 acres USDA NASS, 2022 Census of Agriculture
- Pasture and rangeland
- 72,660 acres USDA NASS, 2022 Census of Agriculture
- Woodland on farms
- 21,880 acres USDA NASS, 2022 Census of Agriculture
- Irrigated land
- 5,415 acres USDA NASS, 2022 Census of Agriculture
Natural hazard ratings
FEMA's National Risk Index rates each hazard for Dolores County relative to every other U.S. county. Overall risk: Very Low.
- LandslideRelatively High
- LightningRelatively Moderate
- DroughtRelatively Low
- WildfireRelatively Low
- EarthquakeVery Low
- HailVery Low
- Heat waveVery Low
- River and inland floodingVery Low
- Strong windVery Low
- TornadoVery Low
- Winter weatherVery Low
FEMA National Risk Index, December 2025
Questions about buying land in Dolores County
How much of Dolores County, CO is in a flood zone?
About under 1% of Dolores County's area is in the 1%-annual-chance (100-year) floodplain used by FEMA's National Risk Index (December 2025), 11th lowest of 64 counties in Colorado. Whether a given parcel is in a flood zone depends on its exact location, so check the FEMA map at your pin.
How much does land cost per acre in Dolores County?
The 2022 Census of Agriculture put the average value of farm land and buildings in Dolores County at $3,270 an acre, 25th highest of 63 counties in Colorado (the median Colorado county was $2,779). It's a self-reported average across farms, so small homesites and recreational tracts often sell for more per acre.
Will a septic system work on land in Dolores County?
Often, but test first. USDA soil surveys rate 92% of Dolores County's mapped soils very limited for conventional septic absorption fields, usually because of wetness, slow permeability, shallow rock or flooding. A perc or soil test on the parcel decides what system the health department will permit.
Is there good farmland in Dolores County?
0% of Dolores County's mapped soils are prime farmland, 5.2% are prime only if drained, irrigated or protected from flooding, and 5.1% are farmland of statewide importance (USDA SSURGO). The 2022 Census of Agriculture counted 264 farms averaging 611 acres.
How often is Dolores County in drought?
Since 2021, at least half of the county was in severe drought or worse in 24% of weekly U.S. Drought Monitor maps, and in extreme drought in 3.1%. On 2026-10-27, 0% of the county was in moderate drought or worse.
Can I check a specific property in Dolores County?
Yes. Enter the address or drop a pin anywhere in Dolores County on the free check. It shows which checks return data at that exact point, and the full report costs $29: flood zone, slope, soils, wetlands, roads, power lines, wildfire and more, each with its source. It is a screen of public maps, not a survey, title search or perc test.
Check the parcel, not just the county
County numbers tell you what to look for. The free check looks at your exact point in Dolores County: flood zone, slope, soils, wetlands, roads, power and more. The full report is $29.
What these numbers can't tell you
- County shares describe Dolores County as a whole; a parcel can be entirely in or out of a flood zone, wetland or poor soil.
- It doesn't look at the whole parcel, its boundaries, title, easements, zoning or permits.
- It isn't a survey, appraisal, elevation certificate, soil or perc test, or Phase I environmental site assessment.
- It can't see local distribution power lines, driveways, legal access, wells or mineral rights.
- Maps lag behind the ground, and distances are straight-line, not driving distance.
Sources and vintages
- U.S. Census Bureau, 2024 Gazetteer Files: 2024 files
- U.S. Census Bureau, Vintage 2024 county population estimates: Vintage 2024 (July 1, 2024)
- U.S. Census Bureau, 2020 Census urban and rural classification: 2020 Census
- U.S. Census Bureau, 2024 county adjacency file: 2024
- FEMA National Risk Index: December 2025 release
- USDA NRCS Web Soil Survey (SSURGO): Soil Data Access, queried 2026-10-31
- USDA NASS, 2022 Census of Agriculture: 2022 Census of Agriculture (published 2024)
- U.S. Drought Monitor county statistics: weekly maps 2021-10-26 to 2026-10-27
- FEMA Flood Map Service Center: look up your own pin
- USFWS National Wetlands Inventory mapper: look up your own pin
Summarized per county by our build script on 2026-10-31. County figures cover the whole county; checks on the report are at your point.