Soil Data Explorer - SPOKANE

Official Series Description

Lab Data Summary

Aggregate lab data for the SPOKANE soil series. This aggregation is based on all pedons with a current taxon name of SPOKANE, 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 SPOKANE 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
43A	84P0164	1983WA019001	Spokane	7	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	48.0047226,-118.8433304
43A	96P0073	1995WA065001	Spokane	7	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	48.1366653,-117.5299988
43A	00P0798	1999WA063005	Spokane	6	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	47.57305,-117.1298139
9	92P0309	1991ID061024	Spokane	6	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	46.1899986,-116.5788879

Water Balance

Monthly water balance estimated using a leaky-bucket style model for the SPOKANE 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 SPOKANE 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 SPOKANE 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 SPOKANE 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 SPOKANE 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 SPOKANE 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 SPOKANE 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 flats position figure.

Soil series sharing subgroup-level classification with SPOKANE, 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 SPOKANE 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
Spokane ashy loam, 5 to 25 percent slopes	48	1130	2487293	2ph78	id057	2013	1:24000
Spokane-Rock outcrop complex, 25 to 65 percent slopes	49	121	2487294	2ph79	id057	2013	1:24000
Spokane loam, 30 to 65 percent slopes	2npp	4	2850883	2npp	id604	1981	1:24000
Lenz-Spokane-Rock outcrop association, 30 to 55 percent slopes	145	3611	79435	2nnf	id606	1976	1:24000
Spokane loam, 30 to 65 percent slopes	184	1251	79474	2npp	id606	1976	1:24000
Spokane-Moscow association, 35 to 65 percent slopes	185	1055	79475	2npq	id606	1976	1:24000
Spokane ashy loam, moist, 5 to 30 percent slopes	183	766	79473	2x1z7	id606	1976	1:24000
Micapeak-Spokane complex, 30 to 55 percent slopes	5027	112	2662891	2x1zb	id606	1976	1:24000
Micapeak-Spokane complex, 15 to 30 percent slopes	5026	71	2662890	2x1z9	id606	1976	1:24000
Spokane-Swakane complex, 15 to 30 percent slopes	5041	68	3099060	2wcb	id606	1976	1:24000
Spokane-Kramerhill complex, 25 to 40 percent slopes	5314	58	2662917	nvf4	id606	1976	1:24000
Kramerhill-Spokane complex, 8 to 25 percent slopes	5313	36	3099057	2wdz	id606	1976	1:24000
Lenz-Spokane complex, 3 to 15 percent slopes	5070	9	2662895	2wfk	id606	1976	1:24000
Spokane-Moscow association, 35 to 65 percent slopes	2npq	691	2936639	2npq	id670		1:24000
Spokane loam, 30 to 65 percent slopes	2npp	257	2936634	2npp	id670		1:24000
Spokane loam, 5 to 30 percent slopes	2npn	127	2936655	2npn	id670		1:24000
Spokane-Rock outcrop complex, very steep	72	9001	68672	29g7	wa043	1978	1:24000
Spokane ashy loam, 5 to 30 percent slopes	69	4037	68668	2x1z6	wa043	1978	1:24000
Spokane very stony loam, 30 to 55 percent slopes	71	3575	68671	29g6	wa043	1978	1:24000
Spokane very stony loam, 5 to 30 percent slopes	70	684	68670	29g5	wa043	1978	1:24000
Kramerhill-Spokane complex, 8 to 25 percent slopes	5313	11901	85931	2wdz	wa063	2012	1:24000
Micapeak-Spokane complex, 15 to 30 percent slopes	5026	4775	85902	2x1z9	wa063	2012	1:24000
Lenz-Spokane complex, 3 to 15 percent slopes	5070	4427	85949	2wfk	wa063	2012	1:24000
Lenz-Spokane complex, 15 to 30 percent slopes	5071	4085	85867	2wbx	wa063	2012	1:24000
Micapeak-Spokane complex, 30 to 55 percent slopes	5027	3212	85903	2x1zb	wa063	2012	1:24000
Spokane-Kramerhill complex, 25 to 40 percent slopes	5314	3083	621213	nvf4	wa063	2012	1:24000
Spokane-Swakane complex, 3 to 15 percent slopes	5040	2651	680683	qv9j	wa063	2012	1:24000
Spokane-Swakane complex, 15 to 30 percent slopes	5041	1734	85880	2wcb	wa063	2012	1:24000
Spokane-Rock outcrop complex, 30 to 55 percent slopes	5037	1003	85940	2wf8	wa063	2012	1:24000
Urban land-Spokane, disturbed complex, 15 to 30 percent slopes	7197	296	2425269	2mdph	wa063	2012	1:24000
Spokane-Rock outcrop complex, 40 to 65 percent slopes	224	14695	158195	59m2	wa065	1978	1:24000
Spokane stony loam, 0 to 40 percent slopes	221	9871	158192	59lz	wa065	1978	1:24000
Spokane-Rock outcrop complex, 0 to 40 percent slopes	223	8890	158194	59m1	wa065	1978	1:24000
Spokane stony loam, 40 to 65 percent slopes	222	7349	158193	59m0	wa065	1978	1:24000
Spokane loam, 25 to 40 percent slopes	219	7236	158189	59lw	wa065	1978	1:24000
Rock outcrop-Spokane complex, 30 to 65 percent slopes	196	5730	158163	59l1	wa065	1978	1:24000
Spokane loam, 0 to 25 percent slopes	218	5452	158188	59lv	wa065	1978	1:24000
Spokane ashy loam, 40 to 65 percent slopes	220	1765	158191	2x1z5	wa065	1978	1:24000
Lenz-Spokane complex, 3 to 15 percent slopes	5070	121	2651324	2wfk	wa065	1978	1:24000
Spokane-Swakane complex, 3 to 15 percent slopes	5040	92	2651321	qv9j	wa065	1978	1:24000
Spokane-Rock outcrop complex, 30 to 55 percent slopes	5037	61	2651320	2wf8	wa065	1978	1:24000
Micapeak-Spokane complex, 15 to 30 percent slopes	5026	38	2651319	2x1z9	wa065	1978	1:24000
Lenz-Spokane complex, 15 to 30 percent slopes	5071	17	2651325	2wbx	wa065	1978	1:24000
Spokane loam, 20 to 40 percent slopes	440	10188	70590	2cg3	wa648	1987	1:24000
Spokane loam, 5 to 20 percent slopes	439	4582	70588	2cg1	wa648	1987	1:24000
Spokane ashy loam, 40 to 65 percent slopes	441	2918	70591	2x1z5	wa648	1987	1:24000
Spokane, warm-Skanid, warm complex, 20 to 40 percent slopes	447	1971	70597	2cgb	wa648	1987	1:24000
Spokane, warm-Skanid, warm complex, 5 to 20 percent slopes	446	1971	70596	2cg9	wa648	1987	1:24000
Spokane, warm-Skanid, warm complex, 40 to 65 percent slopes	448	1838	70598	2cgc	wa648	1987	1:24000
Spokane-Rock outcrop complex, 20 to 40 percent slopes	445	1030	70595	2cg8	wa648	1987	1:24000
Spokane loam, warm, 20 to 40 percent slopes	442	992	70592	2cg5	wa648	1987	1:24000
Spokane loam, warm, 40 to 65 percent slopes	443	659	70593	2cg6	wa648	1987	1:24000
Spokane-Rock outcrop complex, 5 to 20 percent slopes	444	325	70594	2cg7	wa648	1987	1:24000

Map of Series Extent

Approximate geographic distribution of the SPOKANE 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).