Soil Data Explorer - FORKHORN

Official Series Description

Lab Data Summary

Aggregate lab data for the FORKHORN soil series. This aggregation is based on all pedons with a current taxon name of FORKHORN, 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 FORKHORN 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
105	92P0540	1991WI121001	Forkhorn	6	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	44.3677788,-91.3547211
90B	83P0174	S1982WI017009	Forkhorn	4	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	45.1062351,-91.5189877

Water Balance

Monthly water balance estimated using a leaky-bucket style model for the FORKHORN 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 FORKHORN 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 FORKHORN 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 FORKHORN 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.

Competing Series

Soil series competing with FORKHORN 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 FORKHORN 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 FORKHORN 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 mountains figure.

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

Soil series sharing subgroup-level classification with FORKHORN, 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

No block diagrams are available.

Map Units

Map units containing FORKHORN 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
Forkhorn sandy loam, 2 to 6 percent slopes	433B	421	2639465	1vgbl	wi011	1960	1:20000
Forkhorn sandy loam, 6 to 12 percent slopes, moderately eroded	433C2	221	2561691	1vgbm	wi011	1960	1:20000
Forkhorn sandy loam, 0 to 3 percent slopes	433A	175	2639464	1vgbk	wi011	1960	1:20000
Forkhorn sandy loam, 12 to 20 percent slopes, moderately eroded	433D2	47	2639466	1vgbn	wi011	1960	1:20000
Forkhorn sandy loam, 0 to 3 percent slopes	433A	88	2504040	1vgbk	wi023	1960	1:12000
Forkhorn sandy loam, 2 to 6 percent slopes	433B	73	2498540	1vgbl	wi023	1960	1:12000
Forkhorn sandy loam, 6 to 12 percent slopes, moderately eroded	433C2	50	2504041	1vgbm	wi023	1960	1:12000
Forkhorn sandy loam, 2 to 6 percent slopes	433B	5161	2498541	1vgbl	wi033	2003	1:15840
Forkhorn sandy loam, 0 to 3 percent slopes	433A	5038	2504039	1vgbk	wi033	2003	1:15840
Forkhorn sandy loam, 6 to 12 percent slopes, moderately eroded	433C2	573	2504042	1vgbm	wi033	2003	1:15840
Forkhorn sandy loam, 12 to 20 percent slopes, moderately eroded	433D2	17	2518520	1vgbn	wi033	2003	1:15840
Forkhorn sandy loam, 2 to 6 percent slopes	433B	637	3099709	1vgbl	wi035	1974	1:15840
Forkhorn sandy loam, 6 to 12 percent slopes, moderately eroded	433C2	214	3099710	1vgbm	wi035	1974	1:15840
Forkhorn sandy loam, 0 to 3 percent slopes	433A	126	3099708	1vgbk	wi035	1974	1:15840
Forkhorn sandy loam, 12 to 20 percent slopes, moderately eroded	433D2	19	3099711	1vgbn	wi035	1974	1:15840
Forkhorn sandy loam, 2 to 6 percent slopes	433B	364	2774826	1vgbl	wi049	1960	1:20000
Forkhorn sandy loam, 6 to 12 percent slopes, moderately eroded	433C2	255	2774827	1vgbm	wi049	1960	1:20000
Forkhorn sandy loam, 0 to 3 percent slopes	433A	203	2774825	1vgbk	wi049	1960	1:20000
Forkhorn sandy loam, 2 to 6 percent slopes	433B	24	2505893	1vgbl	wi053	1994	1:20000
Forkhorn sandy loam, 0 to 3 percent slopes	433A	342	2561498	1vgbk	wi057	1987	1:15840
Forkhorn sandy loam, 2 to 6 percent slopes	433B	154	2498542	1vgbl	wi063	2001	1:12000
Forkhorn sandy loam, 0 to 3 percent slopes	433A	181	2504038	1vgbk	wi091	1998	1:12000
Forkhorn sandy loam, 2 to 6 percent slopes	433B	126	2498543	1vgbl	wi091	1998	1:12000
Forkhorn sandy loam, 6 to 12 percent slopes, moderately eroded	433C2	87	2504043	1vgbm	wi091	1998	1:12000
Forkhorn sandy loam, strath terrace, 1 to 6 percent slopes	431B	1920	1699642	1v1m5	wi093	2006	1:12000
Forkhorn sandy loam, 2 to 6 percent slopes	433B	623	1690954	1trkx	wi093	2006	1:12000
Forkhorn sandy loam, strath terrace, 6 to 12 percent slopes, moderately eroded	431C2	319	1699644	1v1m7	wi093	2006	1:12000
Forkhorn sandy loam, strath terrace, 12 to 20 percent slopes, moderately eroded	431D2	247	1699641	1v1m4	wi093	2006	1:12000
Forkhorn fine sandy loam, till plain, 1 to 6 percent slopes	440B	245	1700794	1v2tb	wi093	2006	1:12000
Forkhorn sandy loam, 0 to 3 percent slopes	433A	192	1690953	1trkw	wi093	2006	1:12000
Forkhorn sandy loam, 6 to 12 percent slopes, moderately eroded	433C2	120	1690956	1trkz	wi093	2006	1:12000
Forkhorn sandy loam, strath terrace, 20 to 30 percent slopes	431E	30	1699643	1v1m6	wi093	2006	1:12000
Forkhorn sandy loam, 12 to 20 percent slopes, moderately eroded	433D2	29	1690957	1trl0	wi093	2006	1:12000
Forkhorn fine sandy loam, till plain, 6 to 12 percent slopes, moderately eroded	440C2	5	1700795	1v2tc	wi093	2006	1:12000
Forkhorn sandy loam, 2 to 6 percent slopes	433B	201	2498545	1vgbl	wi103	2002	1:12000
Forkhorn sandy loam, 2 to 6 percent slopes	433B	1129	2683476	1vgbl	wi121	1969	1:15840
Forkhorn sandy loam, 0 to 3 percent slopes	433A	468	2683475	1vgbk	wi121	1969	1:15840
Forkhorn sandy loam, 6 to 12 percent slopes, moderately eroded	433C2	201	2683477	1vgbm	wi121	1969	1:15840
Forkhorn sandy loam, 12 to 20 percent slopes, moderately eroded	433D2	129	2683478	1vgbn	wi121	1969	1:15840
Forkhorn sandy loam, 6 to 12 percent slopes, moderately eroded	433C2	46	2504044	1vgbm	wi123	1965	1:12000
Forkhorn sandy loam, 0 to 3 percent slopes	433A	38	3182197	1vgbk	wi141	1971	1:20000

Map of Series Extent

Approximate geographic distribution of the FORKHORN 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).