Soil Data Explorer - TAHOMA

Official Series Description

Lab Data Summary

Aggregate lab data for the TAHOMA soil series. This aggregation is based on all pedons with a current taxon name of TAHOMA, 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 TAHOMA 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
22A	00P0045	S99CA061003	Tahoma	7	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	39.1876861,-120.159925

Water Balance

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

Select annual climate data summaries for the TAHOMA 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 TAHOMA 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).

Competing Series

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

Select annual climate data summaries for the TAHOMA 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 TAHOMA 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 terrace figure.

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

Soil series sharing subgroup-level classification with TAHOMA, 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 TAHOMA 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
Tahoma-Jorge complex, 2 to 15 percent slopes	7222	4905	1652092	1sg49	ca693	2006	1:24000
Jorge-Tahoma complex, 15 to 30 percent slopes	7156	4386	1652093	1sg4b	ca693	2006	1:24000
Tahoma very cobbly sandy loam, 2 to 15 percent slopes, very stony	7221	2042	1652146	1sg61	ca693	2006	1:24000
Jorge-Tahoma complex, 30 to 50 percent slopes	7157	1543	1652094	1sg4c	ca693	2006	1:24000
Fugawee-Tahoma complex, 2 to 30 percent slopes	FTE	16103	464661	hlj2	ca719	1982	1:24000
Jorge-Tahoma complex, 2 to 30 percent slopes	JTE	12905	464703	hlkf	ca719	1982	1:24000
Fugawee-Tahoma complex, 30 to 50 percent slopes	FTF	9239	464662	hlj3	ca719	1982	1:24000
Fugawee-Rock outcrop-Tahoma complex, 30 to 50 percent slopes	FRF	5335	464658	hlhz	ca719	1982	1:24000
Fugawee-Rock outcrop-Tahoma complex, 2 to 30 percent slopes	FRE	4724	464656	hlhx	ca719	1982	1:24000
Tahoma variant-Hotaw variant-Cryumbrepts, wet complex, 2 to 30 p ercent slopes	MUE	3383	464763	hlmc	ca719	1982	1:24000
Fugawee-Tahoma-Aquolls complex, 2 to 30 percent slopes	FVE	1756	464668	hlj9	ca719	1982	1:24000
Jorge-Waca-Tahoma complex, 30 to 50 percent slopes	JWF	1638	464708	hlkl	ca719	1982	1:24000
Jorge-Cryumbrepts, wet-Tahoma complex, 2 to 30 percent slopes	JSE	1570	464701	hlkc	ca719	1982	1:24000
Tahoma variant-Hotaw variant-Cryumbrepts, wet complex, 30 to 75 percent slopes	MUF	1059	464764	hlmd	ca719	1982	1:24000
Fugawee-Rock outcrop-Tahoma complex, 30 to 50 percent slopes, terraces	FRF6	922	464660	hlj1	ca719	1982	1:24000
Fugawee-Rock outcrop-Tahoma complex, 2 to 30 percent slopes, altered	FRE5	769	464657	hlhy	ca719	1982	1:24000
Jorge-Waca-Tahoma complex, 2 to 30 percent slopes	JWE	764	464707	hlkk	ca719	1982	1:24000
Fugawee-Rock outcrop-Tahoma complex, 30 to 50 percent slopes, eroded	FRF2	393	464659	hlj0	ca719	1982	1:24000
Jorge-Tahoma complex, cool, 30 to 50 percent slopes	JwFltb	25	1588146	1q9lj	ca719	1982	1:24000
Jorge-Tahoma complex, cool, 15 to 30 percent slopes	JwEltb	13	1588144	1q9lg	ca719	1982	1:24000
Tahoma very stony sandy loam, 2 to 15 percent slopes	TbDltb	3	1595783	1qkjw	ca719	1982	1:24000

Map of Series Extent

Approximate geographic distribution of the TAHOMA 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).