Soil Data Explorer - ROMAN

Official Series Description

Lab Data Summary

Aggregate lab data for the ROMAN soil series. This aggregation is based on all pedons with a current taxon name of ROMAN, 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 ROMAN were used in the calculation. Source: KSSL snapshot (updated 2020-03-13). Methods used to assemble the KSSL snapshot used by SoilWeb / SDE

There are insufficient data to create the lab data summary figure.

Water Balance

Monthly water balance estimated using a leaky-bucket style model for the ROMAN 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 ROMAN series. Sketches are arranged according to their subgroup-level taxonomic structure. Source: SSURGO snapshot (updated 2024-02-21), parsed OSD records (updated 2023-10-02) and snapshot of SC database (updated 2023-10-02).

Select annual climate data summaries for the ROMAN 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 ROMAN 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 ROMAN share the same family level classification in Soil Taxonomy. Source: parsed OSD records (updated 2023-10-02) and snapshot of the SC database (updated 2023-10-02).

Select annual climate data summaries for the ROMAN 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 ROMAN 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 2D hillslope position figure.

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

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 ROMAN, 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 ROMAN 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
Roman, extremely bouldery-Rock outcrop complex, 35 to 65 percent slopes	158	554	152853	541r	id601	2002	1:24000
Redraven-Roman-Molly families, complex, glaciated upper mountain slopes, granitic geology, 20 to 40 percent slopes	2lg2x	37	2850804	2lg2x	id601	2002	1:24000
Redraven-Roman-Molly families, complex, glaciated ridges, granitic geology	2lg2s	28	2850803	2lg2s	id601	2002	1:24000
Rock outcrop-Roman family-Molly family, complex, glaciated ridges, granitic geology	2lg2p	12	2850802	2lg2p	id601	2002	1:24000
Roman-Redraven-Molly families, complex, shallow incised glaciated mountain slopes, granitic geology, south aspects	2lg32	4	2850805	2lg32	id601	2002	1:24000
Rock outcrop-Lolopeak family-Roman family, complex, steep glacial cirque headwalls, granitic geology	2lg35	1	2850806	2lg35	id601	2002	1:24000
Rock outcrop-Lolopeak family-Roman family, complex, steep glacial cirque headwalls, granitic geology	2lg35	190	2850855	2lg35	id604	1981	1:24000
Rock outcrop-Lolopeak family-Roman family, complex, glacial basins, granitic geology	2lg34	81	2850854	2lg34	id604	1981	1:24000
Redraven-Roman-Molly families, complex, glaciated upper mountain slopes, granitic geology, 15 to 45 percent slopes	2lg2t	44	2850848	2lg2t	id604	1981	1:24000
Redraven-Roman-Molly families, complex, steep glaciated mountain slopes, granitic geology	2lg2w	37	2850849	2lg2w	id604	1981	1:24000
Redraven-Roman-Molly families, complex, glaciated ridges, granitic geology	2lg2s	33	2850847	2lg2s	id604	1981	1:24000
Roman-Redraven-Molly families, complex, moderately steep glaciated mountain slopes, granitic geology, south aspects	2lg2y	29	2850851	2lg2y	id604	1981	1:24000
Redraven-Roman-Molly families, complex, steep glaciated mountain slopes, granitic geology, south aspects	2lg2z	24	2850852	2lg2z	id604	1981	1:24000
Roman-Redraven-Molly families, complex, shallow incised glaciated mountain slopes, granitic geology, north aspects	2lg30	14	2850853	2lg30	id604	1981	1:24000
Redraven-Roman-Molly families, complex, glaciated upper mountain slopes, granitic geology, 20 to 40 percent slopes	2lg2x	12	2850850	2lg2x	id604	1981	1:24000
Rock outcrop-Molly family-Redraven family, complex, steep glaciated mountain slopes, granitic geology	2lg2r	5	2850846	2lg2r	id604	1981	1:24000
Redraven-Roman-Molly families, complex, glaciated upper mountain slopes, granitic geology, 15 to 45 percent slopes	321	21068	2396821	2lg2t	id670		1:24000
Redraven-Roman-Molly families, complex, glaciated upper mountain slopes, granitic geology, 20 to 40 percent slopes	324	18754	2396824	2lg2x	id670		1:24000
Redraven-Roman-Molly families, complex, moderately steep glaciated mountain slopes, granitic geology	322	7412	2396822	2lg2v	id670		1:24000
Roman-Redraven-Molly families, complex, moderately steep glaciated mountain slopes, granitic geology, south aspects	325	6260	2396825	2lg2y	id670		1:24000
Rock outcrop-Lolopeak family-Roman family, complex, steep glacial cirque headwalls, granitic geology	341	4135	2396832	2lg35	id670		1:24000
Roman-Redraven-Molly families, complex, shallow incised glaciated mountain slopes, granitic geology, north aspects	331	3541	2396827	2lg30	id670		1:24000
Redraven-Roman-Molly families, complex, steep glaciated mountain slopes, granitic geology	323	3241	2396823	2lg2w	id670		1:24000
Rock outcrop-Roman family-Molly family, complex, glaciated ridges, granitic geology	315	2541	2396817	2lg2p	id670		1:24000
Roman-Redraven-Molly families, complex, shallow incised glaciated mountain slopes, granitic geology, south aspects	333	2416	2396829	2lg32	id670		1:24000
Redraven-Roman-Molly families, complex, steep glaciated mountain slopes, granitic geology, south aspects	326	2410	2396826	2lg2z	id670		1:24000
Redraven-Roman-Molly families, complex, glaciated ridges, granitic geology	320	2176	2396820	2lg2s	id670		1:24000
Rock outcrop-Lolopeak family-Roman family, complex, glacial basins, granitic geology	335	2035	2396831	2lg34	id670		1:24000
Roman-Redraven-Mollly families, complex, moderately to deeply incised draws on glaciated mountain slopes, granitic geology, south aspects	334	1995	2396830	2lg33	id670		1:24000
Roman-Redraven-Molly families, complex, moderately to deeply incised draws on glaciated mountain slopes, granitic geology, north aspects	332	1360	2396828	2lg31	id670		1:24000
Rock outcrop-Molly family-Redraven family, complex, steep glaciated mountain slopes, granitic geology	317	1135	2396819	2lg2r	id670		1:24000
Rock outcrop-Roman family-Molly family, complex, glaciated mountain slopes, granitic geology	316	1010	2396818	2lg2q	id670		1:24000
Roman, extremely bouldery-Rock outcrop complex, 35 to 65 percent slopes	541r	142	2936728	541r	id670		1:24000
Sig family-Rock outcrop-Roman family, complex, steep glaciated mountain slopes and ridges	158Vra	45	2024127	50fq	id758	1998	1:24000
Rock outcrop-Roman family-Rubble land association, cirque headwalls and scoured basins	40S90	20205	1859675	20f4j	mt605	2007	1:24000
Rock outcrop-Crawfish-Roman families, association, scoured cirque basins	42H92	7119	1859677	20f4l	mt605	2007	1:24000
Sig family-Rock outcrop-Roman family, complex, steep glaciated mountain slopes and ridges	158Vra	62	780328	50fq	mt605	2007	1:24000
Sig family-Rock outcrop-Roman family, complex, steep glaciated mountain slopes and ridges	15GEE	64	1703514	50fq	mt631	1988	1:24000
Sig family-Rock outcrop-Roman family, complex, steep glaciated mountain slopes and ridges	15GEE	13329	149380	50fq	mt635	2006	1:24000
Roman-Crawfish families, complex, steep glaciated mountain slopes and ridges	15GE3	5738	149379	50fp	mt635	2006	1:24000
Ovando-Jeru-Roman families, complex, steep glaciated mountain slopes and ridges	15GE2	3455	149378	50fn	mt635	2006	1:24000
Rock outcrop-Roman family-Rubble land association, cirque headwalls and scoured basins	314	291	1710127	1vdjd	mt636	1983	1:24000
Roman-Priestlake-Jurvannah families complex, trough bottoms, extremely bouldery	47D13	154	2422732	2mb1n	mt638	1985	1:24000
Roman-Priestlake-Lilylake families, complex, moraines	44D41	157	754426	tb1b	mt645	2013	1:12000
Roman-Priestlake-Jurvannah families, complex, trough bottoms	47D13	101	633785	p8hp	mt645	2013	1:12000
Roman family-Rock outcrop-Rubble land association, trough walls	49G43	9	2233635	2dz8r	mt645	2013	1:12000
Rock outcrop-Roman family-Rubble land association, cirque headwalls and scoured basins	40S90	61545	150316	51dx	mt647	2007	1:24000
Roman-Priestlake families-Rock outcrop association, weakly glaciated mountain slopes and ridges	43H41	32803	150323	51f4	mt647	2007	1:24000
Roman family-Rock outcrop-Rubble land association, trough walls	49G43	29452	150263	51c6	mt647	2007	1:24000
Roman-Priestlake-Lilylake families, complex, moraines	44D41	29371	150325	51f6	mt647	2007	1:24000
Rock outcrop-Rubble land-Roman family, association, cirque headwalls and scoured basins	40S91	26295	150317	51dy	mt647	2007	1:24000
Shermount family-Rock outcrop-Roman family, association, cirque headwalls and basins	40H95	23185	150374	51gs	mt647	2007	1:24000
Roman-Priestlake-Jurvannah families, complex, trough bottoms, extremely bouldery	47D13	19912	150329	51fb	mt647	2007	1:24000
Rock outcrop-Shermount-Roman families, association, scoured cirque basins	42H92	16277	150322	51f3	mt647	2007	1:24000
Roman-Rubycreek-Lilylake families, complex, moraines, extremely bouldery	44H41	9550	150327	51f8	mt647	2007	1:24000
Rubycreek-Roman-Jurvannah families, complex, trough bottoms, extremely bouldery	47H13	3332	150333	51fg	mt647	2007	1:24000
Roman-Shermount families-Rock outcrop complex, trough walls	49H45	3330	1887170	21brg	mt647	2007	1:24000
Roman-Shermount families, complex, steep glaciated mountain slopes and ridges	43H40	2174	150376	51gv	mt647	2007	1:24000
Roman-Jurvannah families-Rock outcrop complex, trough bottoms, extremely bouldery	47D15	766	1887171	21brh	mt647	2007	1:24000
Sig family-Rock outcrop-Roman family, complex, steep glaciated mountain slopes and ridges	43H43	521	1678299	50fq	mt647	2007	1:24000
Rock outcrop-Roman family-Molly family, complex, glaciated ridges, granitic geology	2lg2p	99	2850947	2lg2p	wa651	1981	1:24000
Redraven-Roman-Molly families, complex, glaciated upper mountain slopes, granitic geology, 15 to 45 percent slopes	2lg2t	44	2850920	2lg2t	wa651	1981	1:24000
Rock outcrop-Roman family-Molly family, complex, glaciated mountain slopes, granitic geology	2lg2q	19	2850925	2lg2q	wa651	1981	1:24000
Redraven-Roman-Molly families, complex, glaciated ridges, granitic geology	2lg2s	8	2850954	2lg2s	wa651	1981	1:24000
Roman-Redraven-Molly families, complex, moderately to deeply incised draws on glaciated mountain slopes, granitic geology, north aspects	2lg31	3	2850952	2lg31	wa651	1981	1:24000
Redraven-Roman-Molly families, complex, moderately steep glaciated mountain slopes, granitic geology	2lg2v	2	2850938	2lg2v	wa651	1981	1:24000

Map of Series Extent

Approximate geographic distribution of the ROMAN 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).