Soil Data Explorer - KNOCO

Official Series Description

Lab Data Summary

Aggregate lab data for the KNOCO soil series. This aggregation is based on all pedons with a current taxon name of KNOCO, 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 KNOCO 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
78B	03N0783	03TX155OO2	KNOCO	8	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	34.0269432,-99.8755569
78C	88P0907	88OK151002	Knoco	7	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	36.9055557,-98.8166656

Water Balance

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

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 KNOCO, 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. OK-2010-09-29-18 | Woods County - 2003

   Typical pattern of soils and underlying material in the Burford-Knoco-Vernon general soil map unit (Soil Survey of Woods County, Oklahoma; 2003).

2. OK-2012-02-16-42 | Harmon County - September 1984

   Typical pattern of soils and underlying material in the Tillman-Vernon map unit (Soil Survey of Harmon County, Oklahoma; September 1984).

3. OK-2012-02-16-43 | Harmon County - September 1984

   Typical pattern of soils and underlying material in the Knoco-Vernon-Cornick map unit (Soil Survey of Harmon County, Oklahoma; September 1984).

4. TX-2010-11-03-49 | King County - 2007

   Typical pattern of the Westill-Tilvern and Talpa-Knoco general soil map units (Soil Survey of King County, Texas; 2007).

5. TX-2012-03-19-10 | Archer County - April 1995

   Typical pattern of soils and parent material in the Bluegrove-Jolly-Weswind general soil map unit (Soil Survey of Archer County, TX; 1995).

6. TX-2012-03-19-11 | Archer County - April 1995

   Typical pattern of soils and parent material in the Kamay-Deandale general soil map unit (Soil Survey of Archer County, TX; 1995).

7. TX-2012-03-19-12 | Archer County - April 1995

   Typical pattern of soils and parent material in the Vernon-Knoco general soil map unit (Soil Survey of Archer County, TX; 1995).

Map Units

Map units containing KNOCO 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
Knoco-Rock outcrop complex, 15 to 80 percent slopes	5433	34322	1382494	1hdll	ks007	1973	1:24000
Vernon-Knoco complex, 1 to 5 percent slopes	6444	20258	1382528	1hdmp	ks007	1973	1:24000
Knoco-Cornick-Rock outcrop complex, 2 to 20 percent slopes	32	32733	381669	dt4x	ok009	1978	1:24000
Knoco-Rock outcrop complex, 20 to 40 percent slopes	33	10880	381670	dt4y	ok009	1978	1:24000
Knoco-Badland complex, dry, 1 to 12 percent slopes	5	4551	381688	2t014	ok009	1978	1:24000
Vernon-Knoco complex, cool, 1 to 12 percent slopes	60	3241	381700	2t02f	ok009	1978	1:24000
Knoco-Badland complex, 5 to 15 percent slopes	Vr	29857	381783	dt8l	ok011	1965	1:24000
Knoco-Rock outcrop complex, 20 to 40 percent slopes	Ro	11665	381767	dt82	ok011	1965	1:24000
Vernon-Knoco complex, 3 to 12 percent slopes	VeD	1205	381927	2t027	ok015	1967	1:24000
Vernon-Knoco complex, 3 to 12 percent slopes	VeD	41898	382209	2t027	ok031	1965	1:24000
Vernon-Knoco complex, 3 to 12 percent slopes	VsE	46856	382254	2t027	ok033	1961	1:24000
Treadway, Beckman, occasionally flooded, and Knoco soils, 0 to 3 percent slopes	Ts	4021	382251	dtrp	ok033	1961	1:24000
Knoco-Badland complex, 1 to 12 percent slopes	Rg	308	382246	2t015	ok033	1961	1:24000
Knoco soils and Rock outcrop, 12 to 40 percent slopes	KcRG	21062	648171	prgr	ok055	2005	1:24000
Vernon-Knoco complex, cool, 1 to 12 percent slopes	VeKE	12909	648187	2t02f	ok055	2005	1:24000
Knoco-Badland complex, dry, 1 to 12 percent slopes	KoBE	12737	648170	2t014	ok055	2005	1:24000
Knoco, Rock outcrop, and Cottonwood soils, 2 to 20 percent slopes	KRCF	7230	754293	t9x1	ok055	2005	1:24000
Spikebox-Knoco-Rock outcrop complex, 12 to 40 percent slopes	SKRG	1321	755322	tbz7	ok055	2005	1:24000
Vernon-Knoco complex, cool, 1 to 12 percent slopes	65	17561	975501	2t02f	ok057	1982	1:24000
Knoco, Rock outcrop, and Cottonwood soils, 2 to 20 percent slopes	KRCF	13915	975467	11r1p	ok057	1982	1:24000
Knoco-Badland complex, dry, 1 to 12 percent slopes	KoBE	11136	975466	2t014	ok057	1982	1:24000
Knoco soils and Rock outcrop, 12 to 40 percent slopes	KcRG	1992	975468	11r1q	ok057	1982	1:24000
Knoco-Aspermont complex, 3 to 12 percent slopes, gullied	KnAE4	1225	975465	11r1m	ok057	1982	1:24000
Knoco soils and Rock outcrop, 12 to 40 percent slopes	KcRG	5599	392384	f59k	ok065	2000	1:24000
Vernon-Knoco complex, cool, 1 to 12 percent slopes	VeKE	4630	392410	2t02f	ok065	2000	1:24000
Knoco-Badland complex, dry, 1 to 12 percent slopes	KoBE	3512	392383	2t014	ok065	2000	1:24000
Vernon-Knoco complex, 3 to 12 percent slopes	VsE	19515	383494	2t027	ok075	1973	1:24000
Vernon-Knoco-Badland complex, 2 to 12 percent slopes	VrE	1801	383493	dw1r	ok075	1973	1:24000
Knoco-Cornick-Rock outcrop complex, 2 to 20 percent slopes	Vp	19085	383874	dwg1	ok093	1965	1:24000
Knoco-Badland complex, 1 to 3 percent slopes	VnB	15853	383873	dwg0	ok093	1965	1:24000
Knoco-Rock outcrop complex, 20 to 40 percent slopes	Ro	9781	383857	dwfh	ok093	1965	1:24000
Vernon-Knoco complex, 3 to 12 percent slopes	VmE	35271	384986	2t027	ok141	1968	1:24000
Knoco-Badland complex, 1 to 12 percent slopes	Bv	1282	384937	2t015	ok141	1968	1:24000
Vernon-Knoco-Badland complex, 2 to 12 percent slopes	49	1032	385035	dxnh	ok149	1976	1:24000
Vernon-Knoco complex, 1 to 12 percent slopes	VeKE	34659	385244	dxw7	ok151	1995	1:24000
Knoco-Badland complex, 12 to 40 percent slopes	KnBG	32699	385206	dxv0	ok151	1995	1:24000
Knoco-Badland complex, 1 to 12 percent slopes	KoBE	12527	385207	dxv1	ok151	1995	1:24000
Vernon-Knoco complex, 3 to 5 percent slopes, eroded	VeKC2	10584	385243	dxw6	ok151	1995	1:24000
Vernon-Knoco complex, 5 to 12 percent slopes	VcD	33498	385308	dxy9	ok153	1961	1:24000
Knoco-Cottonwood-Rock outcrop complex, 2 to 20 percent slopes	Vp	30131	385310	dxyc	ok153	1961	1:24000
Knoco-Rock outcrop complex, 20 to 40 percent slopes	Rb	6274	385299	dxy0	ok153	1961	1:24000
Vernon-Knoco complex, 3 to 12 percent slopes	VkD	26530	362451	2t027	tx009	1986	1:24000
Knoco-Vernon complex, 3 to 45 percent slopes, extremely bouldery	KvE	22209	362438	d54k	tx009	1986	1:24000
Knoco-Vernon complex, 3 to 12 percent slopes	KvD	15111	362437	2t028	tx009	1986	1:24000
Latom-Knoco complex, 3 to 20 percent slopes	VlD	1646	362452	2wt75	tx009	1986	1:24000
Weymouth-Knoco complex	Wf	32792	362502	d56m	tx011	1963	1:20000
Knoco-Vernon complex, 3 to 12 percent slopes	OvD	76123	362728	2t028	tx023	1971	1:24000
Knoco-Badland complex, 1 to 12 percent slopes	BoC	12123	362700	2t015	tx023	1971	1:24000
Vernon-Knoco complex, dry, 1 to 12 percent slopes	Ve	19078	362979	2t02d	tx033	1970	1:24000
Knoco silty clay	Ba	2156	362941	d5ns	tx033	1970	1:24000
Knoco-Vernon complex, 3 to 20 percent slopes	KvE	88	2962335	f6m8	tx033	1970	1:24000
Knoco-Badland complex, dry, 1 to 12 percent slopes	Ve	38430	363853	2t014	tx075	1961	1:20000
Knoco-Burson complex	Vx	11529	363854	d6m7	tx075	1961	1:20000
Knoco-Weymouth clay loams, 3 to 5 percent slopes	VcC	1158	363852	d6m5	tx075	1961	1:20000
Nebgen-Knoco complex, 3 to 25 percent slopes	41	8188	363895	d6nk	tx077	1977	1:24000
Knoco-Vernon complex, 3 to 12 percent slopes	28	2540	363880	2t028	tx077	1977	1:24000
Knoco-Badland complex, dry, 1 to 12 percent slopes	Ob	43990	364607	2t014	tx101	1969	1:20000
Badland and Knoco soils, dry, 2 to 20 percent slopes	Bo	31322	364574	2vt7z	tx101	1969	1:20000
Knoco, Talpa, and Vernon soils	Ot	19693	364608	d7dk	tx101	1969	1:20000
Knoco-Latom complex, 3 to 45 percent slopes	Vb	12527	364746	2wt74	tx107	1964	1:20000
Knoco clay, 8 to 25 percent slopes	Ba	3945	364699	d7hh	tx107	1964	1:20000
Knoco-Vernon complex, 3 to 20 percent slopes	KvE	1868	393646	f6m8	tx115	2004	1:24000
Vernon-Knoco complex, dry, 1 to 12 percent slopes	Vb	8626	365816	2t02d	tx151	1964	1:24000
Knoco-Latom complex, 3 to 45 percent slopes	Tv	8419	365814	2wt74	tx151	1964	1:24000
Knoco clay, 5 to 40 percent slopes	Ba	3854	365780	d8mc	tx151	1964	1:24000
Cottonwood-Knoco complex, 3 to 20 percent slopes	CKF	36744	3156169	2t02b	tx155	2021	1:24000
Knoco-Badland complex, 1 to 12 percent slopes	KnBF	35222	3156122	2t015	tx155	2021	1:24000
Knoco-Talpa complex, 5 to 30 percent slopes, very bouldery	KTG	32181	3100955	1lh4z	tx155	2021	1:24000
Talpa-Knoco complex, 5 to 30 percent slopes	TKF	13672	3100958	f7df	tx155	2021	1:24000
Vernon-Knoco complex, 3 to 12 percent slopes	VKD	13623	3156165	2t027	tx155	2021	1:24000
Vernon-Knoco complex, cool, 1 to 12 percent slopes	VKcD	9831	3100913	2t02f	tx155	2021	1:24000
Spikebox-Knoco-Rock outcrop complex, 5 to 30 percent slopes	SKRG	4015	3101050	1lh55	tx155	2021	1:24000
Badland and Knoco soils, dry, 2 to 20 percent slopes	BKF	2990	3100911	2vt7z	tx155	2021	1:24000
Cottonwood-Knoco complex, 3 to 20 percent slopes	Ct	31750	367131	2t02b	tx197	1965	1:20000
Knoco-Badland complex, dry, 1 to 12 percent slopes	Vr	21810	367172	2t014	tx197	1965	1:20000
Weymouth and Knoco clay loams, 3 to 8 percent slopes	WvD	4939	367174	db2b	tx197	1965	1:20000
Talpa-Knoco complex	Tc	4150	367165	db21	tx197	1965	1:20000
Glenrio-Knoco complex, 3 to 12 percent slopes	GkD	2293	367434	dbbq	tx205	1973	1:24000
Knoco complex	Vr	13170	367538	dbg2	tx207	1960	1:20000
Vernon-Knoco complex, dry, 1 to 12 percent slopes	Vx	16909	391861	2t02d	tx227	1965	1:24000
Knoco-Vernon complex, 3 to 12 percent slopes	Bv	7763	368226	2t028	tx253	1966	1:20000
Cottonwood-Knoco complex, 3 to 20 percent slopes	CKF	77871	368633	2t02b	tx269	1999	1:31680
Talpa-Knoco-Rock outcrop complex, 5 to 30 percent slopes	TKG	61278	368611	dckp	tx269	1999	1:31680
Vernon-Knoco complex, cool, 1 to 12 percent slopes	KVD	25356	368591	2t02f	tx269	1999	1:31680
Badland and Knoco soils, dry, 2 to 20 percent slopes	BKF	15599	368590	2vt7z	tx269	1999	1:31680
Knoco-Badland complex, 1 to 12 percent slopes	18	100439	368718	2t015	tx275	1975	1:24000
Cottonwood-Knoco complex, 3 to 20 percent slopes	10	37716	368710	2t02b	tx275	1975	1:24000
Knoco-Vernon complex, 3 to 12 percent slopes	39	17219	368741	2t028	tx275	1975	1:24000
Vernon-Knoco complex, dry, 1 to 12 percent slopes	Vx	30935	370749	2t02d	tx335	1965	1:20000
Vernon-Knoco complex, 5 to 25 percent slopes, severely eroded	40	7536	370787	dftw	tx337	1975	1:24000
Knoco clay, 1 to 8 percent slopes	15	3923	370982	dg15	tx353	1979	1:24000
Burson-Knoco-Rock outcrop association, steep	BKG	22988	3124136	dg59	tx359	1978	1:24000
Knoco-Badland association, rolling	KBE	14187	3124142	dg5h	tx359	1978	1:24000
Vernon-Knoco complex, cool, 1 to 12 percent slopes	VWF	13855	3124239	2t02f	tx375	1974	1:24000
Knoco-Badland association, rolling	KBE	4135	3124217	dgdj	tx375	1974	1:24000
Knoco-Quinlan-Burson association, 5 to 50 percent slopes	KQB	10418	371416	dgh5	tx381	1999	1:24000
Vernon-Knoco complex, dry, 1 to 12 percent slopes	Vd	8276	372041	2t02d	tx415	1966	1:24000
Knoco-Badland complex, dry, 1 to 12 percent slopes	OB	52777	372292	2t014	tx433	1970	1:24000
Cottonwood-Knoco complex, 3 to 20 percent slopes	Ct	43808	372268	2t02b	tx433	1970	1:24000
Knoco-Badland complex, 1 to 12 percent slopes	ObE	10208	391534	2t015	tx441	1971	1:20000
Knoco-Vernon complex, 3 to 12 percent slopes, very bouldery	KrE	1651	372691	dht9	tx447	1991	1:24000
Vernon-Knoco complex, 3 to 12 percent slopes	VoD	13708	373395	2t027	tx485	1972	1:20000
Knoco clay, 3 to 15 percent slopes	OwE	8970	373379	djjh	tx485	1972	1:20000
Latom-Knoco complex, 3 to 20 percent slopes	LaE	1062	373364	2wt75	tx485	1972	1:20000
Knoco stony clay, 5 to 30 percent slopes	OsF	869	373378	djjg	tx485	1972	1:20000
Knoco-Badland complex, 1 to 12 percent slopes	Vx	37438	373452	2t015	tx487	1960	1:20000
Knoco-Vernon complex, 3 to 12 percent slopes	KvE	8037	373761	2t028	tx503	2003	1:24000
Knoco-Vernon complex, 3 to 45 percent slopes, extremely bouldery	KvG	466	777724	v38w	tx503	2003	1:24000

Map of Series Extent

Approximate geographic distribution of the KNOCO 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).