Soil Data Explorer - KRUM

Official Series Description

Lab Data Summary

Aggregate lab data for the KRUM soil series. This aggregation is based on all pedons with a current taxon name of KRUM, 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 KRUM were used in the calculation. Source: KSSL snapshot (updated 2020-03-18). 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
81C	S99TX029001	S99TX029001	Krum	5	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	29.6711102,-98.5757523
85	40A4540	S1957TX035090	Krum	3	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	32.0113907,-97.6341629

Water Balance

Monthly water balance estimated using a leaky-bucket style model for the KRUM 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 KRUM series. Sketches are arranged according to their subgroup-level taxonomic structure. Source: SSURGO snapshot (updated 2024-02-21), parsed OSD records (updated 2023-10-06) and snapshot of SC database (updated 2023-10-02).

Select annual climate data summaries for the KRUM 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 2023-10-09).

Geomorphic description summaries for the KRUM 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 2023-10-04).

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

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

Competing Series

Soil series competing with KRUM share the same family level classification in Soil Taxonomy. Source: parsed OSD records (updated 2023-10-06) and snapshot of the SC database (updated 2023-10-02).

Select annual climate data summaries for the KRUM 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 2023-10-09).

Geomorphic description summaries for the KRUM 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 2023-10-04).

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

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

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

Soil series sharing subgroup-level classification with KRUM, 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 2023-10-02).

Block Diagrams

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

1. TX-2010-11-03-07 | Fayette County - 2004

   Pattern of soils and underlying material in the terraces and flood plainsn of the Colorado River (Soil Survey of Fayette County, Texas; 2004).

2. TX-2010-11-03-24 | Hamilton County - 2007

   Pattern of soils and underlying material in the Nuff-Real-Cho and Cisco-Pedernales general soil map units (Soil Survey of Hamilton County, Texas; 2007).

3. TX-2010-11-03-52 | Lampasas County - 1991

   Typical pattern of soils and underlying material in the Brackett-Lampasas general soil map unit (Soil Survey of Lampasas County, Texas; 1991).

4. TX-2012-03-20-24 | Comal and Hays Counties - June 1984

   Pattern of soils in the Lewisville-Gruene-Krum and Branyon-Krum general soil map units (Soil Survey of Comal and Hays Counties, TX; 1984).

5. TX-2012-03-20-25 | Comal and Hays Counties - June 1984

   Pattern of soils in the Krum-Medlin-Eckrant general soil map unit (Soil Survey of Comal and Hays Counties, TX; 1984).

6. TX-2012-03-20-27 | Coryell County - May 1985

   Typical pattern of soils in the Nuff-Cho map unit and the Doss-Real-Krum map unit (Soil Survey of Coryell County, TX; 1985).

7. TX-2012-03-22-11 | Williamson County - January 1983

   Typical landscape pattern of the Branyon-Houston Black-Burleson general soil map unit (Soil Survey of Williamson County, TX; 1983).

Map Units

Map units containing KRUM 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
Krum-Pratley association, gently undulating	KRX	27907	362629	d5bq	tx019	1971	1:24000
Krum silty clay, 1 to 3 percent slopes	KM	5099	362627	2t2j8	tx019	1971	1:24000
Krum silty clay, 3 to 5 percent slopes	KN	3569	362628	2t2j9	tx019	1971	1:24000
Krum silty clay, 0 to 1 percent slopes	KrA	2440	393303	f686	tx021	1972	1:24000
Krum silty clay, cool, 1 to 3 percent slopes	KrB	9136	391104	2wn92	tx027	1972	1:24000
Krum silty clay, 0 to 1 percent slopes	KrA	1847	391103	30my9	tx027	1972	1:24000
Lewisville-Krum complex, 1 to 3 percent slopes	LekB	1192	3130052	2s1s2	tx027	1972	1:24000
Krum-Branyon complex, 0 to 1 percent slopes	KrbA	144	3130048	2s1rr	tx027	1972	1:24000
Branyon-Krum complex, 1 to 3 percent slopes	BrkB	91	3130037	2s1rw	tx027	1972	1:24000
Krum clay, 1 to 5 percent slopes	Kr	14478	390486	2ylv9	tx029	2000	1:24000
Krum clay, 1 to 3 percent slopes	KrB	21730	363001	2wn93	tx035	1977	1:24000
Krum clay, 0 to 1 percent slopes	KrA	3923	363000	2wn91	tx035	1977	1:24000
Krum silty clay, cool, 1 to 3 percent slopes	KcB	12643	364383	2wn92	tx093	1974	1:20000
Krum silty clay, 0 to 1 percent slopes	KcA	1155	364382	30my9	tx093	1974	1:20000
Krum silty clay, cool, 1 to 3 percent slopes	KrB	20471	391160	2wn92	tx099	1983	1:24000
Krum silty clay, rarely flooded	Kr	3361	365729	d8kq	tx149	1991	1:24000
Krum silty clay, 3 to 5 percent slopes	KuC	11646	366199	d91w	tx171	1970	1:20000
Krum silty clay, 1 to 3 percent slopes	KuB	3123	366198	d91v	tx171	1970	1:20000
Krum silty clay, cool, 1 to 5 percent slopes	KrB	30556	376664	2wn94	tx193	1994	1:24000
Krum silty clay, 0 to 1 percent slopes	54	4198	367769	30my9	tx217	1975	1:20000
Krum silty clay, cool, 1 to 3 percent slopes	KrB	4868	368180	2wn92	tx251	1981	1:20000
Krum silty clay, 3 to 5 percent slopes	KrC	1230	368181	30myb	tx251	1981	1:20000
Krum silty clay, 3 to 5 percent slopes	13	20462	368453	2t2j9	tx259	1979	1:31680
Krum silty clay, 1 to 3 percent slopes	12	11270	368452	2t2j8	tx259	1979	1:31680
Krum silty clay, 1 to 3 percent slopes	KrB	13904	368530	2t2j8	tx265	1983	1:31680
Krum silty clay, 3 to 5 percent slopes	KrC	13765	368531	2t2j9	tx265	1983	1:31680
Krum-Urban land complex, 1 to 3 percent slopes	KuB	779	368532	dch4	tx265	1983	1:31680
Krum silty clay, cool, 1 to 5 percent slopes	KrB	27363	368860	2wn94	tx281	1990	1:24000
Krum silty clay, 1 to 3 percent slopes	KrB	524	369798	ddsz	tx299	1990	1:24000
Krum silty clay, cool, 1 to 5 percent slopes	KrC	2612	370105	2wn94	tx309	1992	1:24000
Lewisville-Krum complex, 1 to 3 percent slopes	LekB	1533	3130084	2s1s2	tx331	1988	1:24000
Krum clay, 1 to 3 percent slopes	KcB	11648	390887	2wn93	tx367	1973	1:20000
Krum clay, 0 to 1 percent slopes	KcA	1004	390886	2wn91	tx367	1973	1:20000
Branyon-Krum complex, 1 to 3 percent slopes	BrkB	9942	3130103	2s1rw	tx491	1981	1:20000
Krum-Branyon complex, 0 to 1 percent slopes	KrbA	5394	3130115	2s1rr	tx491	1981	1:20000
Krum silty clay, 1 to 3 percent slopes	KrB	4147	373563	djqf	tx491	1981	1:20000
Krum silty clay, 0 to 1 percent slopes	KrA	2811	373562	djqd	tx491	1981	1:20000
Lewisville-Krum complex, 1 to 3 percent slopes	LekB	1244	3130119	2s1s2	tx491	1981	1:20000
Krum clay, 1 to 3 percent slopes	24	41254	373917	2t2j5	tx601	1977	1:31680
Krum clay, 3 to 5 percent slopes	25	22293	373918	2t2j6	tx601	1977	1:31680
Krum silty clay, cool, 1 to 3 percent slopes	39	25385	391014	2wn92	tx602	1975	1:24000
Krum clay, 1 to 3 percent slopes	KrB	12826	393469	2t2j5	tx604	1981	1:20000
Krum clay, 0 to 1 percent slopes	KrA	4205	390706	2ynhj	tx604	1981	1:20000
Krum clay, 3 to 5 percent slopes	KrC	1444	393470	2t2j6	tx604	1981	1:20000
Krum clay, 1 to 3 percent slopes	KrB	6926	374343	2wn93	tx609	1975	1:20000
Krum clay, 0 to 1 percent slopes	KrA	835	374342	2wn91	tx609	1975	1:20000

Map of Series Extent

Approximate geographic distribution of the KRUM 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 2023-10-04).