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Adams County, Mississippi

A shallow water table limits basements on 27% of Adams County's mapped land. Shrink-swell clay limits houses without basements on 9%.

100% of the county is in drought on the October 13, 2026 Drought Monitor map. FEMA's flood data list 10 flood losses here since 2016. 69% of homes were built before 1980, against 50% nationally; the median home dates from 1972.

Data as of October 13, 2026 · sources

9%

expansive clay: shrink-swell limits slab homes

27%

high water table: limits basements

100%

in drought, October 13, 2026

69%

of homes built before 1980

Soil under Adams County

Expansive clay (limits slab homes)9.2%
High water table (limits basements)27.2%
Septic fields very limited70.0%
Clay swell (LEP, by area)2.9%
High-swell land (LEP 6%+)10.7%
Mapped soil310,572 acres
Soil seriesShare hereSeries nationally: high water table
Memphis44%0%
Sharkey4%99%
Falaya4%n/a
Convent4%n/a
Tunica3%n/a
Bruin3%n/a
Concordia Parish: 83%Wilkinson County: 45%Jefferson County: 34%Franklin County: 45%Catahoula Parish: 70%Tensas Parish: 89%Amite County: 67%Claiborne County: 35%Adams County ConcordiaWilkinsonJeffersonFranklinCatahoulaTensasAmiteClaiborneAdams
Adams County (heavy outline) and nearby counties, shaded by high water table share.under 10%10-25%25-40%40-60%60%+

How we count · survey areas MS001 (2025-09-04)

What the numbers mean here

On 27% of Adams County's mapped land, soil stays saturated within about 6 feet of the surface for part of the year, which is basement depth.

Rain over the 12 months to August 2026: 46.36 in, 12.26 in below the 1991-2020 average year of 58.62 in.

USDA rates 70% of the land very limited for septic absorption fields.

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 34 of the last 52 weeks; the most was 100% of its area, in 29 weeks, most recently on the October 13, 2026 map.

October 21, 2025Share of area in drought, weeklyOctober 13, 2026
Category, October 13, 2026Share of county
D0 abnormally dry or worse100%
D1 moderate drought or worse100%
D2 severe or worse100%
D3 extreme or worse0%
D4 exceptional0%

Flood losses since 2016

10 flood losses since 2016, $60,311 paid. The worst year was 2021, with 4.

YearFlood losses
20162
20171
20181
20190
20201
20214
20220
20230
20240
20251
2026 to date0

Rain

Average year, 1991-202058.62 in
12 months to August 202646.36 in (-12.26)
202553.21 in (-5.41)
Wettest year since 18951973: 79.26 in
Driest year since 18951924: 32.62 in
Days with 1 inch or more, normal at NATCHEZ (7 mi away)20.5

Homes

Housing units14,928
Median year built1972
Built before 198069%
Built 2000 or later14%
Owner-occupied68%
Median value, owner-occupied$108,700
Single-family detached71%

What repairs cost

Published ranges from cost guides, not quotes. More sources, and where they disagree.

WorkRangeSource
Basement waterproofing, US $3,000 to $10,000 Fixr, February 6, 2026
Sump pump installation, US $800 to $2,000 Fixr, January 31, 2025
Crawl space encapsulation, US $2,000 to $8,000 Fixr, August 29, 2025

Nearby counties

PlaceDistanceExpansive clayHigh water table
Concordia Parish, LA 16 mi 65% 83%
Wilkinson County, MS 22 mi 20% 45%
Jefferson County, MS 25 mi 11% 34%
Franklin County, MS 27 mi 10% 45%
Catahoula Parish, LA 32 mi 47% 70%
Tensas Parish, LA 36 mi 75% 89%
Amite County, MS 38 mi 2% 67%
Claiborne County, MS 42 mi 1% 35%

Sources: USDA SSURGO (September 4, 2025) · US Drought Monitor (October 13, 2026) · FEMA NFIP v3 (September 9, 2026) · NOAA (August 2026) · Census ACS 2020-2024. Methods · Data status