Soil Data Explorer - PHILOMATH

Official Series Description

Lab Data Summary

Aggregate lab data for the PHILOMATH soil series. This aggregation is based on all pedons with a current taxon name of PHILOMATH, 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 PHILOMATH 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
2	00P0855	S2000OR003004	Philomath	6	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	44.5997238,-123.2861099
2	01N0511	S2000OR039001	Philomath	6	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	43.9742584,-122.8208847
2	01N0512	S2000OR039002	Philomath	6	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	44.0798111,-122.9428329
2	01N0514	S2001OR043001	Philomath	6	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	44.5195312,-122.797287

Water Balance

Monthly water balance estimated using a leaky-bucket style model for the PHILOMATH 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 PHILOMATH 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 PHILOMATH 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 PHILOMATH 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 PHILOMATH 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 PHILOMATH 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 PHILOMATH 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 PHILOMATH, 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 PHILOMATH 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
Philomath silty clay loam, 3 to 12 percent slopes	131	399	85245	2vpv	or003	2004	1:24000
Philomath silty clay, 12 to 45 percent slopes	57E	109	62391	22xm	or053	1977	1:20000
Philomath silty clay, 3 to 12 percent slopes	56C	68	62390	22xl	or053	1977	1:20000
Dixonville-Philomath-Hazelair complex, 12 to 35 percent slopes	43E	19947	62680	236y	or637	1981	1:20000
Dixonville-Philomath-Hazelair complex, 3 to 12 percent slopes	43C	10336	62679	236x	or637	1981	1:20000
Philomath cobbly silty clay, 12 to 45 percent slopes	108F	6786	62576	233l	or637	1981	1:20000
Philomath silty clay, 3 to 12 percent slopes	107C	2312	62574	233j	or637	1981	1:20000
Philomath cobbly silty clay, 3 to 12 percent slopes	108C	2089	62575	233k	or637	1981	1:20000
Philomath-Urban land complex, 12 to 45 percent slopes	109F	240	62577	233m	or637	1981	1:20000
Philomath cobbly silty clay, 12 to 45 percent slopes	79F	6600	64376	24zn	or639	1983	1:20000
Dixonville-Philomath-Hazelair complex, 12 to 35 percent slopes	35E	5215	64301	24x7	or639	1983	1:20000
Dixonville-Philomath-Hazelair complex, 3 to 12 percent slopes	35C	3935	64300	24x6	or639	1983	1:20000
Philomath cobbly silty clay, 3 to 12 percent slopes	79C	2940	64375	24zm	or639	1983	1:20000
Philomath silty clay, 3 to 12 percent slopes	78C	1205	64374	24zl	or639	1983	1:20000
Philomath-Dixonville complex, 30 to 70 percent slopes	189F	24884	66514	276m	or649	1994	1:24000
Philomath-Edenbower complex, 30 to 60 percent slopes	190F	14186	66520	276t	or649	1994	1:24000
Philomath-Dixonville complex, 3 to 30 percent slopes	189E	11025	66513	276l	or649	1994	1:24000
Philomath-Edenbower complex, 12 to 30 percent slopes	190E	2120	66519	276s	or649	1994	1:24000

Map of Series Extent

Approximate geographic distribution of the PHILOMATH 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).