Soil Data Explorer - KIRVIN

Official Series Description

Lab Data Summary

Aggregate lab data for the KIRVIN soil series. This aggregation is based on all pedons with a current taxon name of KIRVIN, and applied along 1-cm thick depth slices. Solid lines are the slice-wise median, bounded on either side by the interval defined by the slice-wise 5th and 95th percentiles. The median is the value that splits the data in half. Five percent of the data are less than the 5th percentile, and five percent of the data are greater than the 95th percentile. Values along the right hand side y-axis describe the proportion of pedon data that contribute to aggregate values at this depth. For example, a value of "90%" at 25cm means that 90% of the pedons correlated to KIRVIN were used in the calculation. Source: KSSL snapshot (updated 2020-03-13). Methods used to assemble the KSSL snapshot used by SoilWeb / SDE

Pedons used in the lab summary:

MLRA	Lab ID	Pedon ID	Taxonname	CI	NSSL / NASIS Reports	Link To SoilWeb GMap
133B	40A1364	76LA017005	Kirvin	3	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	33.0158333,-93.9533333
133B	87P0404	87LA085003	Kirvin	7	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	31.6927776,-93.6861115
133B	88P0105	88TX499002	Kirvin	7	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	32.6836128,-95.3472214
133B	40A4616	S1972TX423001	Kirvin	5	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	32.25,-95.25
133B	S80TX405001	S80TX405001	Kirvin	5	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	31.3616085,-94.2235336

Water Balance

Monthly water balance estimated using a leaky-bucket style model for the KIRVIN soil series. Monthly precipitation (PPT) and potential evapotranspiration (PET) have been estimated from the 50th percentile of gridded values (PRISM 1981-2010) overlapping with the extent of SSURGO map units containing each series as a major component. Monthly PET values were estimated using the method of Thornthwaite (1948). These (and other) climatic parameters are calculated with each SSURGO refresh and provided by the fetchOSD function of the soilDB package. Representative water storage values (“AWC” in the figures) were derived from SSURGO by taking the 50th percentile of profile-total water storage (sum[awc_r * horizon thickness]) for each soil series. Note that this representation of “water storage” is based on the average ability of most plants to extract soil water between 15 bar (“permanent wilting point”) and 1/3 bar (“field capacity”) matric potential. Soil moisture state can be roughly interpreted as “dry” when storage is depleted, “moist” when storage is between 0mm and AWC, and “wet” when there is a surplus. Clearly there are a lot of assumptions baked into this kind of monthly water balance. This is still a work in progress.

Sibling Summary

Siblings are those soil series that occur together in map units, in this case with the KIRVIN series. Sketches are arranged according to their subgroup-level taxonomic structure. Source: SSURGO snapshot (updated 2024-10-24), parsed OSD records (updated 2025-02-20) and snapshot of SC database (updated 2025-02-20).

Select annual climate data summaries for the KIRVIN series and siblings. Series are sorted according to hierarchical clustering of median values. Source: SSURGO map unit geometry and 1981-2010, 800m PRISM data (updated 2024-10-23).

Geomorphic description summaries for the KIRVIN series and siblings. Series are sorted according to hierarchical clustering of proportions and relative hydrologic position within an idealized landform (e.g. top to bottom). Most soil series (SSURGO components) are associated with a hillslope position and one or more landform-specific positions: hills, mountain slopes, terraces, and/or flats. Proportions can be interpreted as an aggregate representation of geomorphic membership. The values printed to the left (number of component records) and right (Shannon entropy) of stacked bars can be used to judge the reliability of trends. Small Shannon entropy values suggest relatively consistent geomorphic association, while larger values suggest lack thereof. Source: SSURGO component records (updated 2024-10-23).

There are insufficient data to create the 3D mountains figure.

Competing Series

Soil series competing with KIRVIN share the same family level classification in Soil Taxonomy. Source: parsed OSD records (updated 2025-02-20) and snapshot of the SC database (updated 2025-02-20).

Select annual climate data summaries for the KIRVIN series and competing. Series are sorted according to hierarchical clustering of median values. Source: SSURGO map unit geometry and 1981-2010, 800m PRISM data (updated 2024-10-23).

Geomorphic description summaries for the KIRVIN series and competing. Series are sorted according to hierarchical clustering of proportions and relative hydrologic position within an idealized landform (e.g. top to bottom). Proportions can be interpreted as an aggregate representation of geomorphic membership. Most soil series (SSURGO components) are associated with a hillslope position and one or more landform-specific positions: hills, mountain slopes, terraces, and/or flats. The values printed to the left (number of component records) and right (Shannon entropy) of stacked bars can be used to judge the reliability of trends. Shannon entropy values close to 0 represent soil series with relatively consistent geomorphic association, while values close to 1 suggest lack thereof. Source: SSURGO component records (updated 2024-10-23).

There are insufficient data to create the 3D flats position figure.

Soil series sharing subgroup-level classification with KIRVIN, arranged according to family differentiae. Hovering over a series name will print full classification and a small sketch from the OSD. Source: snapshot of SC database (updated 2025-02-20).

Block Diagrams

Click a link below to display the diagram. Note that these diagrams may be from multiple survey areas.

1. LA-2012-02-01-01 | Bossier Parish - August 1962

   Physiographic relationships of general soil areas in the northwestern part of Bossier Parish. The area represented is about 12 miles square (Soil Survey of Bossier Parish, Louisiana; August 1962).

2. LA-2012-04-27-01 | De Soto Parish - October 1991

   Relationship of soils, elevation, and geologic formations in the Tertiary uplands (Soil Survey of De Soto Parish, Louisiana; October 1991).

3. TX-2010-11-03-36 | Houston County - 2002

   Typical pattern of soils and parent material in the Cuthbert-Kirvin-Lilbert general soil map unit (Soil Survey of Houston County, Texas; 2002).

4. TX-2010-11-03-74 | Marion and Cass Counties -

   Pattern of soils and parent material in the Cuthbert-Bowie-Kirvin general soil map unit (Soil Survey of Marion and Cass Counties, Texas).

5. TX-2012-03-19-04 | Angelina County - February 1988

   Typical pattern of soils and underlying material in the Sacul-Cuthbert-Kirvin map unit (Soil Survey of Angelina County, TX; 1988).

6. TX-2012-03-21-05 | Harrison County - October 1994

   Pattern of soils and parent material in the Cuthbert-Bowie-Kirvin general soil map unit (Soil Survey of Harrison County, TX; 1994).

7. TX-2012-03-21-07 | Harrison County - October 1994

   Pattern of soils and parent material in the Lilbert-Warnock-Wolfpen general soil map unit (Soil Survey of Harrison County, TX; 1994).

8. TX-2012-03-21-29 | Leon County - July 1989

   Pattern of soils and underlying material in the Wolfpen-Pickton-Cuthbert general soil map unit (Soil Survey of Leon County, TX; 1989).

9. TX-2012-03-21-77 | Smith County - July 1993

   Typical pattern of soils and parent material in the Redsprings-Cuthbert-Elrose general soil map unit (Soil Survey of Smith County, TX; 1993).

10. TX-2012-03-21-78 | Smith County - July 1993

    Typical pattern of soils and parent material in the Bowie-Cuthbert-Kirvin general soil map unit (Soil Survey of Smith County, TX; 1993).

Map Units

Map units containing KIRVIN as a major component. Limited to 250 records.

Map Unit Name	Symbol	Map Unit Area (ac)	Map Unit Key	National Map Unit Symbol	Soil Survey Area	Publication Date	Map Scale
Sacul-Kirvin association, rolling	37	32620	565663	lzm6	ar057	1976	1:20000
Kirvin fine sandy loam, 3 to 8 percent slopes	16	10383	565640	lzlg	ar057	1976	1:20000
Kirvin fine sandy loam, 8 to 12 percent slopes	17	1774	565641	lzlh	ar057	1976	1:20000
Kirvin-Sacul association, rolling	KSC	41059	566057	m00x	ar103	1969	1:20000
Kirvin fine sandy loam, 8 to 20 percent slopes	KfE	29555	566060	m010	ar103	1969	1:20000
Sacul-Kirvin association, undulating	SKB	27844	566072	m01d	ar103	1969	1:20000
Kirvin fine sandy loam, 3 to 8 percent slopes	KfC	20734	566059	m00z	ar103	1969	1:20000
Kirvin-Sacul association, hilly	KSD	5146	566058	m00y	ar103	1969	1:20000
Kirvin-Norfolk association, undulating	KNB	1749	566056	m00w	ar103	1969	1:20000
Kirvin fine sandy loam, 5 to 15 percent slopes	KiD	16047	2805719	2ssxc	la017	2013	1:24000
Kirvin fine sandy loam, 1 to 5 percent slopes	Kh	2322	1724543	2tljs	la031	1986	1:24000
Kirvin fine sandy loam, 5 to 12 percent slopes	Kn	1944	1724544	2tljy	la031	1986	1:24000
Kirvin-Ruston association, rolling	Kr	7382	1725289	1vx9h	la073	1969	1:24000
Kirvin fine sandy loam, 1 to 5 percent slopes	KnC	12745	1903039	2tljs	la085	1991	1:24000
Kirvin fine sandy loam, 5 to 12 percent slopes	KNE	4871	1903034	2tljy	la085	1991	1:24000
Kirvin fine sandy loam, 5 to 12 percent slopes	KR	22313	1725346	1vxcb	la111	1992	1:24000
Kirvin fine sandy loam, 1 to 5 percent slopes	Kn	16922	1725345	1vxc9	la111	1992	1:24000
Tenaha-Kirvin association, 12 to 20 percent slopes	53	29907	571246	m5f9	ok023	1977	1:24000
Kirvin-Sacul association, sloping	KnE	80161	575149	m9h6	tx001	1970	1:20000
Darco, Kirvin, and Tenaha soils, sloping	DkF	52604	575127	m9gh	tx001	1970	1:20000
Kirvin complex, 5 to 20 percent slopes	KlF	9665	575147	m9h4	tx001	1970	1:20000
Kirvin fine sandy loam, 3 to 8 percent slopes	KfD	3429	575146	m9h3	tx001	1970	1:20000
Kirvin complex, graded, 2 to 8 percent slopes	KmD	2107	575148	m9h5	tx001	1970	1:20000
Kirvin gravelly fine sandy loam, 1 to 5 percent slopes	KgB	3389	575212	2tljq	tx005	1984	1:24000
Kirvin fine sandy loam, 1 to 5 percent slopes	KfB	2582	575211	2tljs	tx005	1984	1:24000
Kirvin soils, graded, 2 to 5 percent slopes	KhB	556	575213	m9k8	tx005	1984	1:24000
Kirvin fine sandy loam, 1 to 5 percent slopes	KrB	2442	375398	2tljs	tx161	1986	1:24000
Kirvin gravelly fine sandy loam, 2 to 8 percent slopes	KyC	2076	375399	2tlk3	tx161	1986	1:24000
Kirvin gravelly fine sandy loam, 2 to 5 percent slopes	KgC	18377	576442	mbtx	tx203	1989	1:24000
Kirvin very fine sandy loam, 2 to 5 percent slopes	KfC	15133	576441	mbtw	tx203	1989	1:24000
Kirvin soils, graded, 2 to 8 percent slopes	KsC	2415	576443	mbty	tx203	1989	1:24000
Kirvin fine sandy loam, 1 to 5 percent slopes	21	6234	367611	2tljs	tx213	1978	1:20000
Kirvin soils, graded	23	708	367613	dbjh	tx213	1978	1:20000
Kirvin-Urban land complex, 2 to 5 percent slopes	22	370	367612	dbjg	tx213	1978	1:20000
Kirvin fine sandy loam, 1 to 5 percent slopes	KfC	20324	575521	2tljs	tx225	1994	1:24000
Kirvin gravelly fine sandy loam, 1 to 5 percent slopes	KgC	2471	575522	2tljq	tx225	1994	1:24000
Kirvin soils, graded, 2 to 8 percent slopes	KhC	950	575523	m9w8	tx225	1994	1:24000
Kirvin fine sandy loam, 1 to 5 percent slopes	KrB	7192	369210	2tljs	tx289	1985	1:24000
Kirvin gravelly fine sandy loam, 1 to 5 percent slopes	KsB	330	369211	2tljq	tx289	1985	1:24000
Kirvin fine sandy loam, 1 to 8 percent slopes	28	31026	575637	2tlk2	tx347	1976	1:24000
Kirvin gravelly fine sandy loam, 1 to 8 percent slopes	29	5476	575638	m9zz	tx347	1976	1:24000
Kirvin soils, graded, 2 to 8 percent slopes	31	1490	575641	mb02	tx347	1976	1:24000
Kirvin-Urban land complex, 1 to 5 percent slopes	30	331	575640	mb01	tx347	1976	1:24000
Kirvin fine sandy loam, 1 to 8 percent slopes	Kf	1122	575693	2tlk2	tx365	1971	1:20000
Kirvin complex, 1 to 8 percent slopes	Kp	497	575694	mb1s	tx365	1971	1:20000
Kirvin fine sandy loam, 1 to 5 percent slopes	KfC	26577	578222	2tljs	tx401	1993	1:24000
Kirvin gravelly fine sandy loam, 2 to 5 percent slopes	KgC	19614	578224	mdpd	tx401	1993	1:24000
Kirvin fine sandy loam, 5 to 15 percent slopes	KfE	9113	578223	mdpc	tx401	1993	1:24000
Kirvin soils graded, 2 to 8 percent slopes	KsC	1358	578225	mdpf	tx401	1993	1:24000
Kirvin fine sandy loam, 1 to 5 percent slopes	KfC	3194	575729	2tljs	tx419	2002	1:24000
Kirvin gravelly fine sandy loam, 1 to 5 percent slopes	KgC	1120	575774	2tljq	tx419	2002	1:24000
Kirvin soils, 1 to 5 percent slopes, graded	KsC	433	575732	mb30	tx419	2002	1:24000
Kirvin very fine sandy loam, 1 to 5 percent slopes	KfC	23277	575806	2tljp	tx423	1987	1:24000
Kirvin gravelly fine sandy loam, 2 to 8 percent slopes	KgC	7138	575807	2tlk3	tx423	1987	1:24000
Kirvin-Urban land complex, 1 to 5 percent slopes	KvC	2117	575809	mb5h	tx423	1987	1:24000
Kirvin fine sandy loam, 1 to 5 percent slopes	KfC	6147	373051	2tljs	tx467	1994	1:24000
Kirvin very gravelly fine sandy loam, 2 to 5 percent slopes	KgC	576	373052	dj5y	tx467	1994	1:24000
Kirvin very fine sandy loam, 2 to 5 percent slopes	KfC	9547	576055	mbff	tx499	1993	1:24000
Kirvin gravelly fine sandy loam, 2 to 8 percent slopes	KgC	9337	576056	2tlk3	tx499	1993	1:24000
Kirvin soils, graded, 3 to 8 percent slopes	KsC	1879	576057	mbfh	tx499	1993	1:24000
Kirvin very fine sandy loam, 3 to 8 percent slopes	KfC	13723	576108	mbh4	tx603	1984	1:24000
Kirvin gravelly fine sandy loam, 2 to 8 percent slopes	KgC	13249	576109	2tlk3	tx603	1984	1:24000
Kirvin soils, graded, 2 to 8 percent slopes	KsC	1534	576111	mbh7	tx603	1984	1:24000
Kirvin-Urban land complex, 2 to 8 percent slopes	KrC	1266	576110	mbh6	tx603	1984	1:24000
Kirvin gravelly fine sandy loam, 2 to 8 percent slopes	KgC	33784	576150	2tlk3	tx608	1981	1:24000
Kirvin very fine sandy loam, 1 to 5 percent slopes	KfC	13115	576149	2tljp	tx608	1981	1:24000
Kirvin-Urban land complex, 2 to 5 percent slopes	KrC	3434	576151	mbjj	tx608	1981	1:24000
Kirvin soils, graded, 3 to 8 percent slopes	KsC	2557	576152	mbjk	tx608	1981	1:24000
Kirvin gravelly fine sandy loam, 2 to 8 percent slopes	KnD	3339	374396	2tlk3	tx610	1973	1:20000
Kirvin soils, 3 to 8 percent slopes	KvD	499	374397	dklb	tx610	1973	1:20000
Kirvin gravelly fine sandy loam, 1 to 5 percent slopes	KiC	32178	576497	2tljq	tx616	2004	1:24000
Kirvin very fine sandy loam, 1 to 5 percent slopes	KrC	31983	576496	2tljp	tx616	2004	1:24000
Kirvin soils, graded, 2 to 8 percent slopes	KiD	5782	576528	mbxp	tx616	2004	1:24000
Kirvin fine sandy loam, 1 to 5 percent slopes	KhB	25411	1894760	2tljs	tx619	2007	1:24000
Kirvin gravelly fine sandy loam, 1 to 5 percent slopes	KiC	5085	1894754	2tljq	tx619	2007	1:24000
Kirvin soils, 2 to 8 percent slopes, graded	KiD	1323	1894815	21lq2	tx619	2007	1:24000

Map of Series Extent

Approximate geographic distribution of the KIRVIN soil series. To learn more about how this distribution was mapped, or to compare this soil series extent to others, use the Series Extent Explorer (SEE) application. Source: generalization of SSURGO geometry (updated 2024-10-30).