Soil Data Explorer - TRAPPS

Official Series Description

Lab Data Summary

Aggregate lab data for the TRAPPS soil series. This aggregation is based on all pedons with a current taxon name of TRAPPS, 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 TRAPPS 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 TRAPPS 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 TRAPPS 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 TRAPPS 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 TRAPPS 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 flats position figure.

Competing Series

Soil series competing with TRAPPS 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 TRAPPS 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 TRAPPS 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 terrace figure.

Soil series sharing subgroup-level classification with TRAPPS, 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 TRAPPS 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
Trapps channery loam, 25 to 60 percent slopes	298F	132	2995527	4wkc	mt603	1989	1:24000
Trapps channery loam, 4 to 25 percent slopes	298D	81	2995526	4wkb	mt603	1989	1:24000
Trapps channery loam, 60 to 80 percent slopes	298G	1	2995528	4wkd	mt603	1989	1:24000
Silverchief-Trapps complex, 8 to 15 percent slopes	599D	151	154953	567h	mt616	2003	1:24000
Trapps gravelly loam, 35 to 60 percent slopes	98F	122	155198	56hd	mt616	2003	1:24000
Trapps-Yreka stony loams, 8 to 25 percent slopes	198E	5	154631	55x3	mt616	2003	1:24000
Trapps gravelly loam, 15 to 35 percent slopes	98E	6844	144671	4vjt	mt621	1997	1:24000
Trapps gravelly loam, 35 to 60 percent slopes	98F	4339	144672	4vjv	mt621	1997	1:24000
Silverchief-Trapps complex, 15 to 35 percent slopes	599E	2224	144522	4vd0	mt621	1997	1:24000
Trapps gravelly loam, 60 to 80 percent slopes	98G	491	144673	4vjw	mt621	1997	1:24000
Trapps gravelly loam, 8 to 15 percent slopes	98D	373	144670	4vjs	mt621	1997	1:24000
Silverchief-Trapps complex, 35 to 60 percent slopes	599F	327	144523	4vd1	mt621	1997	1:24000
Silverchief-Trapps complex, 8 to 15 percent slopes	599D	166	144521	4vcz	mt621	1997	1:24000
Trapps-Yreka complex, 4 to 8 percent slopes	198C	143	144265	4v3q	mt621	1997	1:24000
Trapps-Yreka complex, 8 to 25 percent slopes	198E	32	144266	4v3r	mt621	1997	1:24000
Trapps gravelly loam, 15 to 30 percent slopes	164	1777	145067	4vyl	mt629	1991	1:20000
Trapps gravelly loam, 8 to 15 percent slopes	163	290	145066	4vyk	mt629	1991	1:20000
Whitecow, cool-Trapps, dry channery loams, 25 to 60 percent slopes	285F	4326	147771	4yrt	mt630	1991	1:24000
Trapps-Whitecow-Warneke channery loams, 25 to 60 percent slopes	985F	2412	147949	4yyk	mt630	1991	1:24000
Trapps channery loam, 25 to 60 percent slopes	484F	2358	147827	4ytm	mt630	1991	1:24000
Trapps stony loam, 8 to 25 percent slopes	584D	1875	147863	4yvs	mt630	1991	1:24000
Trapps-Warneke channery loams, 25 to 60 percent slopes	984F	1358	147948	4yyj	mt630	1991	1:24000
Trapps-Yreka complex, 8 to 25 percent slopes	198E	2088	1703242	1v5c9	mt635	2006	1:24000
Silverchief-Trapps complex, 35 to 60 percent slopes	599F	621	1702976	1v52q	mt635	2006	1:24000
Silverchief-Trapps complex, 15 to 35 percent slopes	599E	318	1702975	1v52p	mt635	2006	1:24000
Trapps gravelly loam, 35 to 60 percent slopes	98F	269	1703002	1v53k	mt635	2006	1:24000
Trapps gravelly loam, 15 to 35 percent slopes	98E	189	1703001	1v53j	mt635	2006	1:24000
Trapps gravelly loam, 30 to 60 percent slopes	109	10881	145397	4w97	mt638	1985	1:24000
Trapps gravelly loam, 8 to 30 percent slopes	108	1193	145396	4w96	mt638	1985	1:24000
Wilde-Trapps families complex, mountain uplands and ridges	33B35	167	2422677	2m9zw	mt638	1985	1:24000
Trapps-Wilde families complex, dissected mountain slopes	31B39	28	2422671	2m9zp	mt638	1985	1:24000
Trapps gravelly loam, 35 to 60 percent slopes	98F	4430	145980	4wx1	mt644	1995	1:24000
Silverchief-Trapps complex, 15 to 35 percent slopes	599E	4205	145829	4wr5	mt644	1995	1:24000
Trapps gravelly loam, 15 to 35 percent slopes	98E	3925	145979	4wx0	mt644	1995	1:24000
Trapps channery loam, 25 to 60 percent slopes	298F	3093	145649	4wkc	mt644	1995	1:24000
Trapps-Yreka stony loams, 8 to 25 percent slopes	198E	3077	145593	4whk	mt644	1995	1:24000
Trapps channery loam, 4 to 25 percent slopes	298D	1495	145648	4wkb	mt644	1995	1:24000
Silverchief-Trapps complex, 8 to 15 percent slopes	599D	1199	145828	4wr4	mt644	1995	1:24000
Trapps channery loam, 60 to 80 percent slopes	298G	242	145650	4wkd	mt644	1995	1:24000
Trapps family, dissected mountain slopes	31B28	2075	633769	p8h5	mt645	2013	1:12000
Trapps-Wilde families, complex, dissected mountain slopes	31B39	1643	633770	p8h6	mt645	2013	1:12000
Trapps-Bignell families, complex, steep mountain slopes	30B32	880	754412	tb0w	mt645	2013	1:12000
Wilde-Trapps families, complex, mountain uplands and ridges	33B35	413	1389555	1hmyc	mt645	2013	1:12000
Wilde-Trapps families, complex, steep mountain slopes	30B35	310	757744	tfhc	mt645	2013	1:12000
Trapps-Wilde families, complex, dissected mountain slopes	31B39	6684	150259	51c2	mt647	2007	1:24000
Trapps-Bignell families, complex, steep mountain slopes	30B32	4565	150228	51b2	mt647	2007	1:24000
Trapps family, dissected mountain slopes	31B28	3177	150257	51c0	mt647	2007	1:24000
Wilde-Trapps families, complex, steep mountain slopes	30B35	2841	150230	51b4	mt647	2007	1:24000
Wilde-Trapps families, complex, mountain ridges	33B35	1353	150300	51dd	mt647	2007	1:24000
Wilde-Trapps-Tolman families, association, dissected mountain slopes	31W35	116	150275	51cl	mt647	2007	1:24000
Trapps-Shawmut complex, 1 to 20 percent slopes, extremely stony	3301		3136840	2ypn8	wy629		1:24000
Trapps-Shawmut complex, 1 to 20 percent slopes, extremely stony	3301		3253358	2ypn8	wy656	2008	1:24000

Map of Series Extent

Approximate geographic distribution of the TRAPPS 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).