Soil Data Explorer - DAVIDSON

Official Series Description

Lab Data Summary

Aggregate lab data for the DAVIDSON soil series. This aggregation is based on all pedons with a current taxon name of DAVIDSON, 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 DAVIDSON 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
136	09N0849	S09SC083006	Davidson	5	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	34.898613,-81.8130569
136	09N0850	S09SC083007	Davidson	5	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	34.8097229,-81.8083344
136	09N0851	S09SC083008	Davidson	5	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	34.7997208,-81.819725
136	40A4148	S1972SC065001	DAVIDSON	6	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	33.9870796,-82.2323532
136	80P0417	S1980GA169001	Davidson	7	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	33.0579338,-83.5521164
136	80P0418	S1980GA237001	Davidson	7	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	33.257294,-83.330436
136	80P0419	S1980GA293001	Davidson	7	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	32.9365501,-84.2560272
148	VPI0306	V1990-VA137-306	Davidson	1	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	38.2382889,-78.0935389
n/a	89P0261	88SC000000	Davidson	6	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	n/a

Water Balance

Monthly water balance estimated using a leaky-bucket style model for the DAVIDSON 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 DAVIDSON series. Sketches are arranged according to their subgroup-level taxonomic structure. Source: SSURGO snapshot (updated 2024-10-24), parsed OSD records (updated 2024-10-23) and snapshot of SC database (updated 2024-10-23).

Select annual climate data summaries for the DAVIDSON 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 2024-10-23).

Geomorphic description summaries for the DAVIDSON 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 2024-10-23).

There are insufficient data to create the 3D mountains figure.

Competing Series

Soil series competing with DAVIDSON share the same family level classification in Soil Taxonomy. Source: parsed OSD records (updated 2024-10-23) and snapshot of the SC database (updated 2024-10-23).

Select annual climate data summaries for the DAVIDSON 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 2024-10-23).

Geomorphic description summaries for the DAVIDSON 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 2024-10-23).

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 DAVIDSON, 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 2024-10-23).

Block Diagrams

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

1. AL-2011-05-27-01 | Randolph County - 1967

   Representative pattern of soils and parent materials (Soil Survey of Randolph County, Alabama; 1967).

2. GA-2011-05-31-02 | Morgan County - 1965

   Diagram showing relationship of dominant soils in Lloyd-Davidson association (Soil Survey of Morgan County, Georgia; 1965).

3. SC-2012-03-14-37 | York County - April 1965

   Major soils in association 4 and their relation to the landscape (Soil Survey of York County, SC; 1965).

Map Units

Map units containing DAVIDSON 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
Davidson loam and clay loam, eroded, gently sloping	DcB2	453	122716	43pl	al017	1957	1:20000
Davidson loam, eroded, sloping and strongly sloping	DbD2	283	122715	43pk	al017	1957	1:20000
Davidson clay loam, deep phase, 6 to 10 percent slopes, severely eroded	DaC3	72	122714	2tx4f	al017	1957	1:20000
Davidson-Gwinnett association, hilly	DGD	14435	122782	43rq	al027	1971	1:20000
Davidson clay loam, 6 to 15 percent slopes, severely eroded	DdD3	2987	1895718	21mn6	al037	2006	1:24000
Davidson clay loam, 2 to 6 percent slopes	DaB	405	1895716	21mn4	al037	2006	1:24000
Davidson gravelly clay loam, 6 to 10 percent slopes, severely eroded	DaC3	1112	122837	43th	al111	1965	1:15840
Davidson gravelly sandy loam, 6 to 10 percent slopes, eroded	DgC2	1009	122840	43tl	al111	1965	1:15840
Davidson gravelly clay loam, 10 to 15 percent slopes, severely eroded	DaD3	909	122838	31lhj	al111	1965	1:15840
Davidson gravelly sandy loam, 10 to 15 percent slopes, eroded	DgD2	834	122841	43tm	al111	1965	1:15840
Davidson gravelly clay loam, 2 to 6 percent slopes, severely eroded	DaB3	215	122836	43tg	al111	1965	1:15840
Davidson gravelly sandy loam, 2 to 6 percent slopes, eroded	DgB2	197	122839	43tk	al111	1965	1:15840
Davidson gravelly sandy loam, 15 to 25 percent slopes, eroded	DgE2	130	122842	43tn	al111	1965	1:15840
Davidson loam, 2 to 6 percent slopes	DgB	1870	124143	2tx4g	ga021	1976	1:20000
Davidson clay loam, 6 to 10 percent slopes, moderately eroded	DhC2	1805	124144	2tx3h	ga021	1976	1:20000
Davidson clay loam, 10 to 17 percent slopes, eroded	DhD2	945	124145	455p	ga021	1976	1:20000
Davidson loam, 6 to 10 percent slopes, moderately eroded	DgC2	375	126238	2tx3j	ga097	1960	1:15840
Davidson loam, 2 to 6 percent slopes, moderately eroded	DgB2	220	126237	2tx3f	ga097	1960	1:15840
Davidson clay loam, loamy substratum, 6 to 10 percent slopes, severely eroded	DhC3	195	126240	2tx47	ga097	1960	1:15840
Davidson clay loam, 10 to 15 percent slopes, very severely eroded	DhD4	95	126241	47c9	ga097	1960	1:15840
Davidson clay loam, loamy substratum, 2 to 6 percent slopes, severely eroded	DhB3	90	126239	2tx43	ga097	1960	1:15840
Davidson loam, thin solum, 15 to 25 percent slopes	DnE	550	124488	45jr	ga137	1960	1:20000
Davidson loam, thin solum, 25 to 60 percent slopes	DnF	520	124489	45js	ga137	1960	1:20000
Davidson loam, thin solum, 10 to 15 percent slopes, eroded	DnD2	290	124487	45jq	ga137	1960	1:20000
Davidson loam, 2 to 6 percent slopes, moderately eroded	DgB2	1975	124694	2tx3f	ga199	1960	1:15840
Davidson loam, 6 to 10 percent slopes, moderately eroded	DgC2	1350	124695	2tx3j	ga199	1960	1:15840
Davidson clay loam, loamy substratum, 6 to 10 percent slopes, severely eroded	DhC3	1290	124698	2tx47	ga199	1960	1:15840
Davidson clay loam, 10 to 15 percent slopes, severely eroded	DhD3	1260	124699	45rk	ga199	1960	1:15840
Davidson clay loam, loamy substratum, 2 to 6 percent slopes, severely eroded	DhB3	510	124697	2tx43	ga199	1960	1:15840
Davidson loam, 15 to 25 percent slopes, eroded	DgE2	285	124696	45rg	ga199	1960	1:15840
Davidson loam, 2 to 6 percent slopes, moderately eroded	DaB2	2500	142595	2tx3f	ga211	1998	1:24000
Davidson clay loam, 6 to 15 percent slopes, severely eroded	DvD3	1910	142601	4sd1	ga211	1998	1:24000
Davidson loam, 2 to 6 percent slopes, moderately eroded	DgB2	290	124957	2tx3f	ga255	1962	1:15840
Davidson clay loam, loamy substratum, 2 to 6 percent slopes, severely eroded	DhB3	230	124958	2tx41	ga255	1962	1:15840
Davidson clay loam, loamy substratum, 6 to 10 percent slopes, severely eroded	DhC3	130	124959	2tx45	ga255	1962	1:15840
Davidson clay, 2 to 6 percent slopes, severely eroded	DpB3	530	125027	4634	ga297	1962	1:15840
Davidson clay, 6 to 10 percent slopes, severely eroded	DpC3	495	125028	4635	ga297	1962	1:15840
Davidson loam, 2 to 6 percent slopes, moderately eroded	DgB2	475	125023	2tx3f	ga297	1962	1:15840
Davidson clay, 10 to 15 percent slopes, severely eroded	DpD3	275	125029	4636	ga297	1962	1:15840
Davidson loam, 6 to 10 percent slopes, moderately eroded	DgC2	170	125024	2tx3j	ga297	1962	1:15840
Davidson loam, 2 to 6 percent slopes, moderately eroded	DgB2	69180	125207	2tx3f	ga604	1972	1:20000
Davidson clay loam, 10 to 25 percent slopes, moderately eroded	DhE2	66480	125210	2tx3g	ga604	1972	1:20000
Davidson clay loam, 6 to 10 percent slopes, moderately eroded	DhC2	59010	125209	2tx3h	ga604	1972	1:20000
Davidson loam, 6 to 10 percent slopes, moderately eroded	DgC2	10290	125208	2tx3j	ga604	1972	1:20000
Davidson-Urban land complex, 2 to 10 percent slopes	DyC	2165	125211	4692	ga604	1972	1:20000
Davidson gravelly loam, 6 to 10 percent slopes, eroded	DrC2	10570	125427	46j1	ga618	1966	1:15840
Davidson gravelly loam, 2 to 6 percent slopes, eroded	DrB2	8080	125426	46j0	ga618	1966	1:15840
Davidson gravelly clay loam, 6 to 10 percent slopes, severely eroded	DsC3	6395	125430	46j4	ga618	1966	1:15840
Davidson gravelly loam, 10 to 15 percent slopes, eroded	DrD2	5560	125428	46j2	ga618	1966	1:15840
Davidson gravelly clay loam, 10 to 15 percent slopes, severely eroded	DsD3	4830	125431	31lhj	ga618	1966	1:15840
Davidson gravelly clay loam, 2 to 6 percent slopes, severely eroded	DsB3	1460	125429	46j3	ga618	1966	1:15840
Davidson clay loam, loamy substratum, 6 to 10 percent slopes, severely eroded	DhC3	6595	125480	2tx46	ga623	1965	1:15840
Davidson clay loam, 10 to 15 percent slopes, severely eroded	DhD3	4495	125481	46ks	ga623	1965	1:15840
Davidson sandy loam, 2 to 6 percent slopes, eroded	DqB2	3635	125483	46kv	ga623	1965	1:15840
Davidson clay loam, loamy substratum, 2 to 6 percent slopes, severely eroded	DhB3	1555	125479	2tx42	ga623	1965	1:15840
Davidson sandy loam, 6 to 10 percent slopes, eroded	DqC2	1550	125484	46kw	ga623	1965	1:15840
Davidson clay loam, 15 to 25 percent slopes, severely eroded	DhE3	915	125482	46kt	ga623	1965	1:15840
Davidson sandy loam, 15 to 25 percent slopes, eroded	DqE2	235	125485	46kx	ga623	1965	1:15840
Davidson loam, 2 to 6 percent slopes	DgB	3495	125522	2tx4g	ga625	1976	1:20000
Davidson loam, 6 to 10 percent slopes	DgC	1125	125523	46m4	ga625	1976	1:20000
Davidson loam, 2 to 6 percent slopes	DgB	2445	125550	2tx4g	ga628	1977	1:20000
Davidson clay loam, 6 to 10 percent slopes, moderately eroded	DhC2	2320	125551	2tx3h	ga628	1977	1:20000
Davidson clay loam, 10 to 25 percent slopes, moderately eroded	DhE2	1355	125552	2tx3g	ga628	1977	1:20000
Davidson loam, 2 to 6 percent slopes	DgB	5500	125606	2tx4g	ga629	1976	1:20000
Davidson clay loam, 6 to 10 percent slopes, moderately eroded	DhC2	2095	125714	2tx3h	ga636	1975	1:20000
Davidson loam, 2 to 6 percent slopes	DgB	1642	125713	2tx4g	ga636	1975	1:20000
Davidson clay loam, 10 to 15 percent slopes, eroded	DhD2	922	125715	46tb	ga636	1975	1:20000
Davidson clay loam, 6 to 10 percent slopes, severely eroded	DhC3	46900	125763	2tx3x	ga642	1967	1:15840
Davidson clay loam, 10 to 25 percent slopes, severely eroded	DhE3	29375	125764	46vx	ga642	1967	1:15840
Davidson loam, 2 to 6 percent slopes	DgB	19135	125759	2tx4g	ga642	1967	1:15840
Davidson loam, 10 to 15 percent slopes, eroded	DgD2	8260	125761	46vt	ga642	1967	1:15840
Davidson loam, 6 to 10 percent slopes, moderately eroded	DgC2	7805	125760	2tx3j	ga642	1967	1:15840
Davidson loam, 2 to 8 percent slopes	DdB	8144	2433040	2mns5	nc057	1985	1:24000
Davidson loam, 8 to 15 percent slopes	DdD	1919	2433041	2mns6	nc057	1985	1:24000
Davidson loam, 15 to 25 percent slopes	DdE	1208	2433042	2mns7	nc057	1985	1:24000
Davidson clay loam, 6 to 10 percent slopes	DaC	533	112308	3rvv	nc063	1971	1:15840
Davidson clay loam, 2 to 6 percent slopes	DaB	521	112307	3rvt	nc063	1971	1:15840
Davidson sandy clay loam, 2 to 8 percent slopes	DaB	2803	113662	3t8j	nc119	1977	1:24000
Davidson sandy clay loam, 8 to 15 percent slopes	DaD	904	113663	3t8k	nc119	1977	1:24000
Davidson sandy clay loam, 15 to 25 percent slopes	DaE	695	113664	3t8l	nc119	1977	1:24000
Davidson loam, 2 to 8 percent slopes	DaB	82	117439	3y6c	nc151	1998	1:24000
Davidson loam, 2 to 6 percent slopes	DaB	5533	1154997	2tx4g	sc001	1976	1:20000
Davidson loam, 6 to 10 percent slopes	DaC	2205	1154998	17rw0	sc001	1976	1:20000
Davidson loam, 2 to 10 percent slopes, eroded	DaC2	261	132083	4ffr	sc021	1960	1:20000
Davidson sandy clay loam, 2 to 6 percent slopes, eroded	DaB2	420	129841	4c3f	sc037	1978	1:20000
Davidson sandy clay loam, 6 to 10 percent slopes, eroded	DaC2	164	129842	4c3g	sc037	1978	1:20000
Davidson sandy clay loam, 2 to 6 percent slopes	DaB	1835	130041	4c9w	sc047	1973	1:20000
Davidson sandy clay loam, 6 to 10 percent slopes	DaC	388	130042	4c9x	sc047	1973	1:20000
Davidson clay loam, 2 to 6 percent slopes, eroded	DaB2	2361	130268	4ck6	sc057	1967	1:20000
Davidson clay loam, 6 to 10 percent slopes, eroded	DaC2	1087	130269	4ck7	sc057	1967	1:20000
Davidson clay loam, 10 to 15 percent slopes, eroded	DaD2	596	130270	4ck8	sc057	1967	1:20000
Davidson sandy clay loam, 2 to 6 percent slopes	DaB	1347	130694	4czy	sc065	1973	1:20000
Davidson sandy clay loam, 6 to 10 percent slopes	DaC	122	130695	4czz	sc065	1973	1:20000
Davidson sandy clay loam, 2 to 6 percent slopes, moderately eroded	DaB2	196	639230	pg5b	sc071	2005	1:24000
Davidson clay loam, 6 to 10 percent slopes, severely eroded	DdC3	288	2678802	2r2v1	sc083	1965	1:20000
Davidson loam, 2 to 10 percent slopes, eroded	DaC2	347	130940	4d7w	sc602	1960	1:20000
Davidson clay loam, 7 to 15 percent slopes, eroded	DaC2	720	516964	kby8	va113	1967	1:15840
Davidson clay loam, 2 to 7 percent slopes, eroded	DaB2	374	516963	kby7	va113	1967	1:15840
Davidson clay loam, 15 to 25 percent slopes, eroded	DaD2	124	516965	kby9	va113	1967	1:15840

Map of Series Extent

Approximate geographic distribution of the DAVIDSON 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 2024-10-30).