Soil Data Explorer - JOPPA

Official Series Description

Lab Data Summary

Aggregate lab data for the JOPPA soil series. This aggregation is based on all pedons with a current taxon name of JOPPA, 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 JOPPA 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
149A	87P0188	86MD510006	Joppa	5	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	39.2457133,-76.61998

Water Balance

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

Competing Series

Soil series competing with JOPPA 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 JOPPA 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 JOPPA 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 flats position figure.

Soil series sharing subgroup-level classification with JOPPA, 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. MD-2010-09-03-03 | City of Baltimore - 1998

   Pattern of soils in the Urban land-Joppa-Sassafras association (Soil Survey of City of Baltimore, Maryland; 1998).

2. MD-2012-02-03-04 | City of Baltimore - 1998

   Pattern of soils in the Urban land-Joppa-Sassafras association (Soil Survey of City of Baltimore, Maryland; 1998).

Map Units

Map units containing JOPPA 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
Urban land-Joppa complex, 0 to 15 percent slopes	UoC	211	128681	49x0	dc001	1975	1:12000
Joppa gravelly sandy loam, 15 to 40 percent slopes	JtD	153	128617	49ty	dc001	1975	1:12000
Joppa gravelly sandy loam, 8 to 15 percent slopes	JtC	82	128616	49tx	dc001	1975	1:12000
Joppa-Urban land complex, 8 to 15 percent slopes	JuC	77	128619	49v0	dc001	1975	1:12000
Joppa-Urban land complex, 0 to 8 percent slopes	JuB	59	128618	49tz	dc001	1975	1:12000
Joppa-Urban land complex, 15 to 25 percent slopes	JuD	33	128620	49v1	dc001	1975	1:12000
Joppa gravelly sandy loam, 0 to 8 percent slopes	JtB	15	128615	49tw	dc001	1975	1:12000
Joppa-Urban land complex, 0 to 8 percent slopes	13UB	1323	533895	kxkf	md510	1993	1:12000
Joppa-Urban land complex, 8 to 15 percent slopes	13UC	1123	533896	kxkg	md510	1993	1:12000
Urban land-Joppa complex, 0 to 8 percent slopes	14UB	544	533897	kxkh	md510	1993	1:12000
Sassafras-Joppa complex, 0 to 8 percent slopes	30B	194	533941	kxlx	md510	1993	1:12000
Joppa gravelly sandy loam, 8 to 15 percent slopes	13C	188	533893	kxkc	md510	1993	1:12000
Joppa gravelly sandy loam, 0 to 8 percent slopes	13B	121	533892	kxkb	md510	1993	1:12000
Joppa gravelly sandy loam, 15 to 60 percent slopes	13E	74	533894	kxkd	md510	1993	1:12000
Joppa gravelly sandy loam, 5 to 10 percent slopes	JpC	823	533398	kx1d	md600	1972	1:15840
Sassafras and Joppa soils, 15 to 30 percent slopes	SsE	562	533453	kx35	md600	1972	1:15840
Joppa gravelly sandy loam, 2 to 5 percent slopes	JpB	484	533397	kx1c	md600	1972	1:15840
Sassafras and Joppa soils, 10 to 15 percent slopes	SsD	387	533452	kx34	md600	1972	1:15840

Map of Series Extent

Approximate geographic distribution of the JOPPA 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).