Soil Data Explorer | California Soil Resource Lab

Lab Data Summary

Aggregate lab data for the COLLUVIAL LAND soil series. This aggregation is based on all pedons with a current taxon name of COLLUVIAL LAND, 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 COLLUVIAL LAND were used in the calculation. Source: KSSL snapshot (updated 2020-03-13). Methods used to assemble the KSSL snapshot used by SoilWeb / SDE

There are insufficient data to create the lab data summary figure.

Water Balance

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

There are insufficient data to create the water balance bar figure.

There are insufficient data to create the water balance line figure.

Sibling Summary

Siblings are those soil series that occur together in map units, in this case with the COLLUVIAL LAND series. Sketches are arranged according to their subgroup-level taxonomic structure. Source: SSURGO snapshot (updated 2024-10-24), parsed OSD records (updated 2024-10-23) and snapshot of SC database (updated 2024-10-23).

There are insufficient data to create the sibling sketch figure.

Select annual climate data summaries for the COLLUVIAL LAND 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).

There are insufficient data to create the annual climate figure.

Geomorphic description summaries for the COLLUVIAL LAND 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 2D hillslope position figure.

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 terrace figure.

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

Competing Series

Soil series competing with COLLUVIAL LAND share the same family level classification in Soil Taxonomy. Source: parsed OSD records (updated 2024-10-23) and snapshot of the SC database (updated 2024-10-23).

There are insufficient data to create the competing sketch figure.

Select annual climate data summaries for the COLLUVIAL LAND 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).

There are insufficient data to create the annual climate figure.

Geomorphic description summaries for the COLLUVIAL LAND 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 2D hillslope position figure.

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 terrace figure.

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

Soil series sharing subgroup-level classification with COLLUVIAL LAND, 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 2024-10-23).

This figure is not available.

Block Diagrams

No block diagrams are available.

Map Units

Map units containing COLLUVIAL LAND 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
Colluvial land, sedimentary rocks	CdsF	7677	458599	hd6j	ca021	1961	1:20000
Colluvial land, volcanic rocks	CdvF	7283	458601	hd6l	ca021	1961	1:20000
Colluvial land, serpentine rocks	CduF	301	458600	hd6k	ca021	1961	1:20000
Colluvial land	CsF	17198	459975	hfmx	ca607	1967	1:20000
Colluvial land, volcanic rocks	CkF	13585	460708	hgdk	ca645	1961	1:20000
Colluvial land, sedimentary rocks	ClF	11230	460709	hgdl	ca645	1961	1:20000
Colluvial land	CsFsh	693	2766076	hfmx	ca645	1961	1:20000
Colluvial land	CzF	419	464262	hl36	ca654	1966	1:24000
Colluvial land	CsFsh	1735	1868383	20q6f	ca707	1983	1:24000
Colluvial land, volcanic rocks	CkFtc	255	1868279	20q32	ca707	1983	1:24000
Colluvial land	CsFsc	3	1528647	1n9p6	ca708	1984	1:24000
Colluvial land, 60 to 75 percent slopes	315	35350	2747810	2q1z3	ca709	2010	1:24000
Colluvial land, sedimentary rocks	CdsFgl	181	2747896	2q418	ca709	2010	1:24000
Colluvial land	CO	2346	468144	hq4f	hi950	1966	1:24000
Rock outcrop-Colluvial land complex, 60 to 90 percent slopes	Sr	823	154246	55hp	id662	1969	1:31680
Colluvial and Alluvial land	Cu	2792	1425982	1jvvf	or601	1968	1:20000
Colluvial land and Shale outcrop	CN	2080	484573	j87d	ut640	1967	1:20000
Colluvial land, extremely stony	Cu	7668	516960	kby4	va113	1967	1:15840
Colluvial land, very stony	Cr	870	516959	kby3	va113	1967	1:15840
Colluvial land	Cu	584	70054	2bwt	wa619	1968	1:24000
Colluvial land	CE	1569	350827	cs20	wy619	1971	1:24000

Soil Data Explorer - COLLUVIAL LAND