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Guadalupe County, New Mexico
USDA's soil survey flags shrink-swell clay on 2% of Guadalupe County's mapped land and a shallow water table under basements on under 1%, both below the national shares of 15% and 29%. 100% of the county is in drought on the October 13, 2026 Drought Monitor map.
FEMA's flood data list no flood losses here since 2016. 54% of homes were built before 1980, against 50% nationally; the median home dates from 1976.
Data as of October 13, 2026 · sources
expansive clay: shrink-swell limits slab homes
high water table: limits basements
in drought, October 13, 2026
of homes built before 1980
Soil under Guadalupe County
| Expansive clay (limits slab homes) | 2.4% |
| High water table (limits basements) | 0.1% |
| Septic fields very limited | 59.4% |
| Clay swell (LEP, by area) | 3.6% |
| High-swell land (LEP 6%+) | 2.4% |
| Mapped soil | 1,941,785 acres |
| Soil series | Share here | Series nationally: expansive clay |
|---|---|---|
| Pastura | 13% | n/a |
| Clovis | 12% | n/a |
| Redona | 7% | n/a |
| Lacoca | 6% | n/a |
| Harvey | 5% | n/a |
| San Jon | 5% | n/a |
How we count · survey areas NM019 (2025-09-09)
What the numbers mean here
Rain over the 12 months to August 2026: 10.41 in, 4.15 in below the 1991-2020 average year of 14.56 in.
USDA rates 59% of the land very limited for septic absorption fields.
With shrink-swell clay on 2% and a shallow water table on under 1% of the land, the soil survey points to neither problem across most of Guadalupe County; conditions still vary lot by lot.
Drought
100% of the county is in drought (D1 or worse) on the October 13, 2026 map. Part of the county was in drought in 33 of the last 52 weeks; the most was 100% of its area, in 28 weeks, most recently on the October 13, 2026 map.
| Category, October 13, 2026 | Share of county |
|---|---|
| D0 abnormally dry or worse | 100% |
| D1 moderate drought or worse | 100% |
| D2 severe or worse | 98.1% |
| D3 extreme or worse | 9% |
| D4 exceptional | 0% |
Flood losses since 2016
FEMA's flood data list no flood losses in Guadalupe County since 2016.
Rain
| Average year, 1991-2020 | 14.56 in |
| 12 months to August 2026 | 10.41 in (-4.15) |
| 2025 | 18.09 in (+3.53) |
| Wettest year since 1895 | 1941: 32.06 in |
| Driest year since 1895 | 1956: 6.19 in |
| Days with 1 inch or more, normal at DILIA (27 mi away) | 2.6 |
Homes
| Housing units | 2,029 |
| Median year built | 1976 |
| Built before 1980 | 54% |
| Built 2000 or later | 18% |
| Owner-occupied | 75% |
| Median value, owner-occupied | $110,000 |
| Single-family detached | 59% |
What repairs cost
Published ranges from cost guides, not quotes. More sources, and where they disagree.
Nearby counties
| Place | Distance | Expansive clay | High water table |
|---|---|---|---|
| San Miguel County, NM | 42 mi | 23% | 1% |
| De Baca County, NM | 43 mi | 3% | 2% |
| Torrance County, NM | 66 mi | 5% | 1% |
| Quay County, NM | 72 mi | 15% | 1% |
| Mora County, NM | 77 mi | 46% | under 1% |
| Santa Fe County, NM | 80 mi | 6% | under 1% |
| Curry County, NM | 84 mi | 29% | 1% |
| Harding County, NM | 86 mi | 15% | 1% |
Sources: USDA SSURGO (September 9, 2025) · US Drought Monitor (October 13, 2026) · FEMA NFIP v3 (September 9, 2026) · NOAA (August 2026) · Census ACS 2020-2024. Methods · Data status