Soil Data Explorer - HOPLAND

Official Series Description

Lab Data Summary

Aggregate lab data for the HOPLAND soil series. This aggregation is based on all pedons with a current taxon name of HOPLAND, 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 HOPLAND were used in the calculation. Source: KSSL snapshot (updated 2020-03-18). 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 HOPLAND 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 HOPLAND 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 HOPLAND 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 HOPLAND 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 terrace figure.

There are insufficient data to create the 3D flats position figure.

Competing Series

Soil series competing with HOPLAND 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 HOPLAND 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).

There are insufficient data to create the annual climate figure.

Geomorphic description summaries for the HOPLAND 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 HOPLAND, 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. CA-2011-05-27-04 | Mendocino County, Eastern Part, and Trinity County, Southwestern Part - 1991

   Pattern of terraces in Ukiah Valley and adjacent mountains (Soil Survey of Mendocino County, Eastern Part, and Trinity County, Southwestern Part, California; 1991).

Map Units

Map units containing HOPLAND 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
Maymen-Hopland-Mayacama association, 20 to 60 percent slopes, MLRA 15	173	24416	459576	2xcb7	ca033	1985	1:24000
Maymen-Hopland-Etsel association, 15 to 50 percent slopes	171	21174	459574	hf6z	ca033	1985	1:24000
Millsholm-Bressa-Hopland association, 30 to 50 percent slopes	178	12905	459581	hf76	ca033	1985	1:24000
Maymen-Hopland-Mayacama association, 50 to 75 percent slopes	174	12084	459577	hf72	ca033	1985	1:24000
Yorktree-Hopland-Ashokawna complex, 15 to 50 percent slopes	252	4389	459655	hf9l	ca033	1985	1:24000
Maymen-Hopland-Mayacama complex, 9 to 30 percent slopes	172	1500	459575	hf70	ca033	1985	1:24000
Yorkville-Hopland loams, 30 to 50 percent slopes	231em		1607635	1qyw6	ca097	1968	1:20000
Hopland-Witherell-Ashokawna complex, 30 to 50 percent slopes, MLRA 5	149em		1607719	2w91t	ca097	1968	1:20000
Hopland-Wohly complex, 50 to 75 percent slopes	171wm		1607749	1qyzw	ca097	1968	1:20000
Hopland-Woodin complex, 30 to 50 percent slopes	152em		1608188	1qzg1	ca097	1968	1:20000
Witherell-Hopland-Ashokawna complex, 50 to 75 percent slopes, high ffd	211em		1607630	2xkbs	ca097	1968	1:20000
Yorktree-Hopland-Woodin complex, 30 to 50 percent slopes	225em		1607632	1qyw3	ca097	1968	1:20000
Hopland loam, 50 to 75 percent slopes, high ffd	142em		1607621	2xk9y	ca097	1968	1:20000
Maymen-Etsel-Hopland complex, 15 to 50 percent slopes	158em		1607624	1qyvv	ca097	1968	1:20000
Mayacama-Hopland-Etsel complex, 30 to 75 percent slopes	157em		1607623	1qyvt	ca097	1968	1:20000
Hopland loam, 30 to 50 percent slopes, high ffd	141em		1607622	2xk9x	ca097	1968	1:20000
Maymen-Hopland-Mayacama association, 50 to 75 percent slopes	174l	66	799099	vtjd	ca113	1968	1:20000
Maymen-Hopland-Mayacama association, 20 to 60 percent slopes, MLRA 15	173l	42	695116	2xcb7	ca113	1968	1:20000
Maymen-Hopland-Etsel association, 15 to 50 percent slopes	171l	24	695115	rbb2	ca113	1968	1:20000
Hopland-Sanhedrin-Kekawaka complex, 50 to 75 percent slopes	425	151	470157	hgr0	ca601	2011	1:24000
Yorktree-Hopland-Woodin complex, 30 to 50 percent slopes	225	41968	461110	hgtj	ca687	1985	1:24000
Hopland-Sanhedrin-Kekawaka complex, 30 to 50 percent slopes	146	30839	461031	hgqz	ca687	1985	1:24000
Hopland-Witherell-Ashokawna complex, 30 to 50 percent slopes, MLRA 5	149	29920	461034	2w91t	ca687	1985	1:24000
Yorktree-Hopland-Woodin complex, 50 to 75 percent slopes	226	14008	461111	hgtk	ca687	1985	1:24000
Hopland-Sanhedrin-Kekawaka complex, 50 to 75 percent slopes	147	12306	461032	hgr0	ca687	1985	1:24000
Hopland loam, 50 to 75 percent slopes, high ffd	142	11140	461027	2xk9y	ca687	1985	1:24000
Mayacama-Hopland-Etsel complex, 30 to 75 percent slopes	157	9604	461042	hgrb	ca687	1985	1:24000
Hopland loam, 30 to 50 percent slopes, high ffd	141	9224	461026	2xk9x	ca687	1985	1:24000
Hopland-Wohly loams, 30 to 50 percent slopes	150	8129	461035	hgr3	ca687	1985	1:24000
Hopland-Maymen-Etsel complex, 30 to 50 percent slopes	143	6184	461028	hgqw	ca687	1985	1:24000
Hopland-Wohly loams, 50 to 75 percent slopes	151	6019	461036	hgr4	ca687	1985	1:24000
Hopland-Sanhedrin-Kekawaka complex, 15 to 30 percent slopes	145	5249	461030	hgqy	ca687	1985	1:24000
Witherell-Hopland-Ashokawna complex, 50 to 75 percent slopes, high ffd	211	5189	461096	2xkbs	ca687	1985	1:24000
Yorkville-Hopland loams, 30 to 50 percent slopes	231	4800	461116	hgtq	ca687	1985	1:24000
Witherell-Hopland-Ashokawna complex, 50 to 75 percent slopes, low ffd	2110	4557	3115304	2xkbr	ca687	1985	1:24000
Hopland-Woodin complex, 50 to 75 percent slopes	153	4123	461038	hgr6	ca687	1985	1:24000
Hopland-Woodin complex, 30 to 50 percent slopes	152	4108	461037	hgr5	ca687	1985	1:24000
Hopland-Maymen-Etsel complex, 50 to 75 percent slopes	144	3603	461029	hgqx	ca687	1985	1:24000
Maymen-Etsel-Hopland complex, 15 to 50 percent slopes	158	2212	461043	hgrc	ca687	1985	1:24000
Hopland-Witherell-Ashokawnacomplex, 15 to 30 percent slopes	148	1994	461033	hgr1	ca687	1985	1:24000
Hopland-Wohly complex, 50 to 75 percent slopes	171	11292	465742	hmmy	ca694	1993	1:24000
Hopland-Witherell-Ashokawna complex, 30 to 50 percent slopes, MLRA 5	169	7738	465738	2w91t	ca694	1993	1:24000
Hopland-Wohly complex, 30 to 50 percent slopes	170	7051	465740	hmmw	ca694	1993	1:24000
Hopland-Ashokawna association, 50 to 75 percent slopes	168	4616	465737	hmms	ca694	1993	1:24000
Updegraff-Hopland-Woodin complex, 30 to 50 percent slopes	218	2612	465799	hmps	ca694	1993	1:24000
Hopland loam, 50 to 75 percent slopes, high ffd	167	1600	465736	2xk9y	ca694	1993	1:24000
Hopland loam, 30 to 50 percent slopes, high ffd	166	1545	465735	2xk9x	ca694	1993	1:24000
Yorkville-Hopland association, 30 to 50 percent slopes	241	1517	465829	hmqr	ca694	1993	1:24000
Witherell-Hopland-Ashokawna complex, 50 to 75 percent slopes, high ffd	228	978	465813	2xkbs	ca694	1993	1:24000
Hopland-Sanhedrin-Kekawaka complex, 30 to 50 percent slopes	146em	161	1701138	1v35f	ca701	1984	1:24000
Hopland-Witherell-Ashokawna complex, 30 to 50 percent slopes, MLRA 5	149em	58	1701139	2w91t	ca701	1984	1:24000
Hopland-Maymen-Etsel complex, 30 to 50 percent slopes	143me	1003	2747836	hgqw	ca709	2010	1:24000
Hopland-Maymen-Etsel complex, 50 to 75 percent slopes	144me	662	2747837	hgqx	ca709	2010	1:24000
Hopland-Sanhedrin-Kekawaka complex, 50 to 75 percent slopes	147me	67	2747840	hgr0	ca709	2010	1:24000
Hopland-Woodin complex, 30 to 50 percent slopes	152me	56	2747841	hgr5	ca709	2010	1:24000
Hopland-Sanhedrin-Kekawaka complex, 15 to 30 percent slopes	145me	36	2747838	hgqy	ca709	2010	1:24000
Hopland-Woodin complex, 50 to 75 percent slopes	153me	18	2747842	hgr6	ca709	2010	1:24000
Hopland-Sanhedrin-Kekawaka complex, 30 to 50 percent slopes	146me	14	2747839	2q203	ca709	2010	1:24000

Map of Series Extent

Approximate geographic distribution of the HOPLAND 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).