Soil Data Explorer - NORKA

Official Series Description

Lab Data Summary

Aggregate lab data for the NORKA soil series. This aggregation is based on all pedons with a current taxon name of NORKA, 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 NORKA 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
67A	40A3124	S1964WY015011	Norka	6	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	41.5927773,-104.2086105
67B	91P0041	90CO063001	Norka	7	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	39.2991676,-102.5199966
72	81P0581	81CO121001	Norka	7	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	40.148056,-103.1244431
72	90P0029	89CO063268	Norka	6	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	39.1133347,-102.1213913
72	90P0031	89CO063268A	Norka	4	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	39.1191673,-102.1244431
72	89P0558	89CO063268B	Norka	4	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	39.1133347,-102.1191635

Water Balance

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

Competing Series

Soil series competing with NORKA 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 NORKA 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 NORKA 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 mountains figure.

Soil series sharing subgroup-level classification with NORKA, 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

Click a link below to display the diagram. Note that these diagrams may be from multiple survey areas.

1. SD-2012-03-15-28 | Fall River County - April 1982

   Pattern of soils in the Mathias-Butche-Rockoa association (Soil Survey of Fall River County, SD; 1982).

2. SD-2012-03-15-29 | Fall River County - April 1982

   Pattern of soils in the Norka association (Soil Survey of Fall River County, SD; 1982).

3. SD-2012-03-15-55 | Jackson County, Northern Part - July 1987

   Pattern of soils and underlying material in the Weta-Cactusflat and Blackpipe-Wortman associations (Soil Survey of Jackson County, Northern Part, SD; 1987).

4. WY-2012-03-23-05 | Goshen County, Southern Part - November 1971

   Typical pattern of soils, topography, and parent material in association 2 (Soil Survey of Goshen County, Wyoming, Southern Part; 1971).

Map Units

Map units containing NORKA 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
Ulysses and norka silt loams, 0 to 1 percent slopes	UnA	18881	94217	3518	co009	1966	1:20000
Ulysses and norka silt loams, 1 to 3 percent slopes	UnB	10853	94218	3519	co009	1966	1:20000
Norka silt loam, 0 to 2 percent slopes	26	90786	94435	3589	co061	1977	1:24000
Norka silt loam, 0 to 3 percent slopes	52	124303	96851	37s7	co063	1996	1:24000
Weld-Norka silt loams, 0 to 3 percent slopes	96	63320	96804	37qq	co063	1996	1:24000
Norka-Colby silt loams, 5 to 15 percent slopes	56	58862	96849	37s5	co063	1996	1:24000
Norka-Colby silt loams, 3 to 5 percent slopes	55	55000	96850	2w5dd	co063	1996	1:24000
Norka-Colby-Weld silt loams, 3 to 5 percent slopes	57	25273	96859	2w5dv	co063	1996	1:24000
Norka-Colby silt loams, 0 to 3 percent slopes	54	19466	96852	37s8	co063	1996	1:24000
Norka silt loam, 1 to 3 percent slopes, eroded	53	3195	96848	37s4	co063	1996	1:24000
Norka-Ulysses loams, 1 to 3 percent slopes	75	13534	94560	35db	co075	1974	1:24000
Mitchell-Norka loams, 0 to 3 percent slopes	71	8306	94556	35d6	co075	1974	1:24000
Norka loam, 0 to 1 percent slopes	74	1685	94559	35d9	co075	1974	1:24000
Colby-Norka loams, 5 to 9 percent slopes	17	113826	94976	35tr	co121	1982	1:24000
Norka-Colby loams, 3 to 5 percent slopes	47	73038	95009	2w5dc	co121	1982	1:24000
Norka-Colby very fine sandy loams, 3 to 9 percent slopes	46	5007	95008	35vs	co121	1982	1:24000
Norka silt loam, 2 to 6 percent slopes	NoB	18584	355129	2tvtp	sd047	1980	1:24000
Norka silt loam, 2 to 6 percent slopes	P276B	4923	2733140	2rvfg	sd047	1980	1:24000
Norka silt loam, 6 to 9 percent slopes	NoC	4412	355130	2y6f5	sd047	1980	1:24000
Colby-Norka silt loams, 6 to 15 percent slopes	CnD	4286	355098	2tvtq	sd047	1980	1:24000
Colby-Norka silt loams, cool, 6 to 15 percent slopes	P080D	2229	2733124	30wn1	sd047	1980	1:24000
Norka silt loam, 0 to 2 percent slopes	NoA	1064	355128	2tvtn	sd047	1980	1:24000
Norka silt loam, 6 to 9 percent slopes	P276C	925	2733141	2rvfh	sd047	1980	1:24000
Norka silt loam, 0 to 2 percent slopes	P276A	238	2733139	2rvff	sd047	1980	1:24000
Colby-Norka silt loams, 6 to 15 percent slopes	CmC	4977	2580886	2tvtq	sd606	2011	1:24000
Norka silt loam, 2 to 6 percent slopes	NgB	3430	2580936	2tvtp	sd606	2011	1:24000
Norka-Weta silt loams, 0 to 3 percent slopes	NhA	3245	2580937	cyj9	sd606	2011	1:24000
Norka silt loam, 0 to 2 percent slopes	NgA	2862	2580935	2tvtn	sd606	2011	1:24000
Norka silt loam, 2 to 6 percent slopes	P276B	40	2768142	2rvfg	sd607	2011	1:24000
Colby-Norka silt loams, cool, 6 to 15 percent slopes	P080D	29	2768134	30wn1	sd607	2011	1:24000
Norka silt loam, 6 to 9 percent slopes	P276C	17	2768143	2rvfh	sd607	2011	1:24000
Norka-Colby silt loams, 6 to 15 percent slopes	NpD	2575	2582644	cy3b	sd611	2011	1:24000
Norka silt loam, 0 to 2 percent slopes	NoA	1807	2582643	2tvtn	sd611	2011	1:24000
Norka-Weta silt loams, 0 to 3 percent slopes	NtA	81	2582677	1lm7z	sd611	2011	1:24000
Spangler-Norka loams, 1 to 6 percent slopes	P474B	2899	2745924	2rxvp	wy011	1978	1:24000
Spangler-Norka loams, 6 to 10 percent slopes	P474C	1904	2745925	2rxvq	wy011	1978	1:24000
Norka loam, 1 to 6 percent slopes	P274B	1261	2745773	2rxt7	wy011	1978	1:24000
Norka loam, 6 to 10 percent slopes	P274C	1224	2745774	2rxt8	wy011	1978	1:24000
Spangler-Norka complex, 1 to 6 percent slopes	171	311	349255	cqf9	wy011	1978	1:24000
Norka silt loam, 6 to 9 percent slopes	P276C	14	2768199	2rvfh	wy045	1984	1:24000
Norka-Weld loams, 0 to 6 percent slopes	NwB	7463	104726	3hz8	wy615	1965	1:20000
Rosebud and Norka loams, 1 to 6 percent slopes	RnB	6648	104739	3hzp	wy615	1965	1:20000
Norka and Colby loams, 0 to 6 percent slopes	NrB	6433	104725	3hz7	wy615	1965	1:20000
Rosebud and Norka loams, 6 to 10 percent slopes	RnC	1956	104740	3hzq	wy615	1965	1:20000
Norka loam, 1 to 6 percent slopes	NoB	1454	104724	3hz6	wy615	1965	1:20000
Rosebud and Norka loams, 0 to 1 percent slopes	RnA	1219	104738	3hzn	wy615	1965	1:20000
Norka loam, 0 to 1 percent slopes	NoA	872	104723	3hz5	wy615	1965	1:20000
Norka-Weld loams, 6 to 10 percent slopes	NwC	770	104727	3hz9	wy615	1965	1:20000

Map of Series Extent

Approximate geographic distribution of the NORKA 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).