Soil Data Explorer - PURDAM

Official Series Description

Lab Data Summary

Aggregate lab data for the PURDAM soil series. This aggregation is based on all pedons with a current taxon name of PURDAM, 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 PURDAM 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
11	40A1071	S1956ID045010	Purdam	6	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	43.8940392,-116.546814
11	40A1070	S1957ID045035	PURDAM	5	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	43.905426,-116.6129227
11	10N1355	S2010ID027001	Purdam	8	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	43.6166667,-116.7844444

Water Balance

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

There are insufficient data to create the annual climate figure.

Geomorphic description summaries for the PURDAM 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 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 PURDAM, 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 PURDAM 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
Purdam silt loam, 0 to 2 percent slopes	141	26259	2519098	2q70	id001	2012	1:24000
Tadpole-Purdam-Trevino complex, 0 to 5 percent slopes	4010	10850	2519223	2prhj	id001	2012	1:24000
Chilcott-Purdam-Bowns complex, 0 to 8 percent slopes	4102	6712	2519226	2prhm	id001	2012	1:24000
Purdam-Power-Urban land complex, 0 to 2 percent slopes	147	5597	2519104	2q76	id001	2012	1:24000
Power-Purdam complex, 0 to 2 percent slopes	4106	5536	2519230	2prhr	id001	2012	1:24000
Purdam-Power silt loams, 0 to 2 percent slopes	144	4005	2519101	2q73	id001	2012	1:24000
Purdam silt loam, 2 to 4 percent slopes	142	2898	2519099	2q71	id001	2012	1:24000
Purdam-McPan-Bowns complex, 1 to 8 percent slopes	4101	1938	2519225	2prhl	id001	2012	1:24000
Purdam-Power silt loams, 2 to 4 percent slopes	145	1116	2519102	2q74	id001	2012	1:24000
Purdam silt loam, 4 to 8 percent slopes	143	767	2519100	2q72	id001	2012	1:24000
Urban land-Purdam complex, 0 to 2 percent slopes	9141	575	2519294	2prh5	id001	2012	1:24000
Urban land-Purdam complex, 2 to 4 percent slopes	9142	438	2519295	2prh6	id001	2012	1:24000
Purdam-Power silt loams, 4 to 8 percent slopes	146	240	2519103	2q75	id001	2012	1:24000
Power-Purdam silt loams, 0 to 2 percent slopes	173	3310	81177	2qgm	id656	1992	1:24000
Power-Purdam silt loams, 4 to 8 percent slopes	175	1109	81179	2qgp	id656	1992	1:24000
Power-Purdam silt loams, 2 to 4 percent slopes	174	264	81178	2qgn	id656	1992	1:24000
Lankbush-Purdam complex, 12 to 30 percent slopes	LbE	15314	81352	2qn8	id659	1971	1:20000
Purdam-Power silt loams, 3 to 7 percent slopes	PpC	6164	81383	2qp8	id659	1971	1:20000
Power-Purdam silt loams, 7 to 12 percent slopes	PoD	5178	81381	2qp6	id659	1971	1:20000
Purdam-Power silt loams, 1 to 3 percent slopes	PpB	479	81382	2qp7	id659	1971	1:20000
Power and Purdam soils, 1 to 3 percent slopes	PuB	7613	80671	2py9	id660	1962	1:15840
Power and Purdam soils, 0 to 1 percent slopes	PuA	3316	80670	2py8	id660	1962	1:15840
Power and Purdam soils, 3 to 7 percent slopes	PuC	2843	80672	2pyb	id660	1962	1:15840
Power and Purdam soils, 7 to 12 percent slopes	PuD	844	80673	2pyc	id660	1962	1:15840
Power-Purdam silt loams, 0 to 1 percent slopes	PpA	13718	80838	2q3p	id665	1967	1:20000
Power-Purdam silt loams, 1 to 3 percent slopes	PpB	5198	80839	2q3q	id665	1967	1:20000
Purdam-Sebree silt loams, 0 to 1 percent slopes	PtA	4996	80846	2q3y	id665	1967	1:20000
Purdam silt loam, 0 to 1 percent slopes	PrA	3904	80842	2q3t	id665	1967	1:20000
Purdam silt loam, 1 to 3 percent slopes	PrB	2994	80843	2q3v	id665	1967	1:20000
Purdam-Sebree silt loams, 1 to 3 percent slopes	PtB	2200	80847	2q3z	id665	1967	1:20000
Purdam silt loam, water table, 0 to 1 percent slopes	PsA	1326	80845	2q3x	id665	1967	1:20000
Power-Purdam silt loams, 3 to 7 percent slopes	PpC	1018	80840	2q3r	id665	1967	1:20000
Purdam silt loam, 3 to 7 percent slopes	PrC	1013	80844	2q3w	id665	1967	1:20000
Power-Purdam silt loams, 7 to 12 percent slopes	PpD	254	80841	2q3s	id665	1967	1:20000
Snowmore-Purdam-Power complex, 1 to 4 percent slopes	175	3025	81909	2r77	id681	1993	1:24000
Elijah-Purdam complex, 0 to 12 percent slopes	49	2500	82033	2rc7	id681	1993	1:24000
Power-Purdam complex, 1 to 4 percent slopes	149	1735	81880	2r69	id681	1993	1:24000
Snowmore-Purdam-Power complex, 4 to 12 percent slopes	176	790	81910	2r78	id681	1993	1:24000
Paulville-Purdam complex, 2 to 8 percent slopes	142	365	81873	2r62	id681	1993	1:24000
Purdam silt loam, 0 to 4 percent slopes	120	110626	2519477	2qxl	id685	2012	1:24000
Owsel-Purdam complex, 1 to 12 percent slopes	113	56644	2519469	2qxb	id685	2012	1:24000
Elijah-Purdam silt loams, 0 to 8 percent slopes	56	38257	2519580	2r0x	id685	2012	1:24000
Purdam-Sebree-Owsel complex, 0 to 8 percent slopes	122	35026	2519479	2qxn	id685	2012	1:24000
Purdam silt loam, 4 to 8 percent slopes	121	9732	2519478	2qxm	id685	2012	1:24000
Power-Purdam silt loams, 0 to 1 percent slopes	119	1148	2519475	2qxj	id685	2012	1:24000
Tadpole-Purdam-Trevino complex, 0 to 5 percent slopes	4010	412	2519641	2prhj	id685	2012	1:24000
Purdam-McPan-Bowns complex, 1 to 8 percent slopes	4101	354	2519642	2prhl	id685	2012	1:24000
Chilcott-Purdam-Bowns complex, 0 to 8 percent slopes	4102	117	2519643	2prhm	id685	2012	1:24000
Power-Purdam complex, 0 to 2 percent slopes	4106	87	2519644	2prhr	id685	2012	1:24000
Purdam silt loam, 1 to 4 percent slopes	93	27518	80303	2pkf	id704	1992	1:24000
Purdam silt loam, 4 to 8 percent slopes	94	16328	80304	2pkg	id704	1992	1:24000
Sluka-Purdam association, 15 to 50 percent slopes	126	1098	80191	2pft	id704	1992	1:24000
Purdam silt loam, 8 to 12 percent slopes	95	982	80305	2pkh	id704	1992	1:24000

Map of Series Extent

Approximate geographic distribution of the PURDAM 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).