Soil Data Explorer - BOLAN

Official Series Description

Lab Data Summary

Aggregate lab data for the BOLAN soil series. This aggregation is based on all pedons with a current taxon name of BOLAN, 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 BOLAN 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
104	09N1089	S09IA055001	Bolan	7	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	42.3885384,-91.4717407
104	09N1090	S09IA067001	Bolan	7	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	43.1413956,-92.6843719
104	09N1091	S09IA195001	Bolan	7	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	43.3145561,-93.1371384
104	X28-174-1	S1979IA055004	Bolan	2	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	42.2997191,-91.4157996
104	X28-974-1	S1980IA055006	Bolan	2	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	42.5924465,-91.4092218
104	X53-174-1	S1982IA105119	Bolan	2	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	42.2869383,-91.1809674

Water Balance

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

Competing Series

Soil series competing with BOLAN 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 BOLAN 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 BOLAN 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.

Soil series sharing subgroup-level classification with BOLAN, 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. IA-2011-05-31-27 | Floyd County - 1995

   Pattern of soils and parent material in the Maxfield-Klinger-Dinsdale association (Soil Survey of Floyd County, Iowa; 1995).

Map Units

Map units containing BOLAN 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
Bolan loam, 2 to 5 percent slopes	174B	3246	403363	fjqq	ia023	1978	1:15840
Bolan loam, 0 to 2 percent slopes	174	650	403362	fjqp	ia023	1978	1:15840
Bolan loam, 5 to 9 percent slopes	174C	618	403364	fjqr	ia023	1978	1:15840
Bolan loam, 2 to 5 percent slopes	174B	2483	403789	fk5g	ia033	1978	1:15840
Bolan loam, 0 to 2 percent slopes	174	752	403788	fk5f	ia033	1978	1:15840
Bolan loam, 2 to 5 percent slopes	174B	2380	405008	flfs	ia055	1984	1:15840
Bolan loam, 5 to 9 percent slopes	174C	706	405009	flft	ia055	1984	1:15840
Bolan loam, 2 to 5 percent slopes	174B	460	405217	flnj	ia057	1980	1:15840
Bolan loam, 0 to 2 percent slopes	174	354	405216	flnh	ia057	1980	1:15840
Bolan-Augusta Lake complex, 5 to 9 percent slopes, moderately eroded	574C2	116	2481221	2p8xd	ia059	2011	1:12000
Bolan loam, 2 to 5 percent slopes	174B	3750	405849	fm9x	ia067	1989	1:15840
Bolan loam, 0 to 2 percent slopes	174	1847	405848	fm9w	ia067	1989	1:15840
Bolan loam, 5 to 9 percent slopes	174C	268	405851	fm9z	ia067	1989	1:15840
Bolan loam, 2 to 5 percent slopes	174B	2459	404871	fl9c	ia069	1977	1:15840
Bolan loam, 5 to 9 percent slopes	174C	969	404872	fl9d	ia069	1977	1:15840
Bolan loam, 0 to 2 percent slopes	174	1	2474738	2p258	ia069	1977	1:15840
Bolan loam, 2 to 5 percent slopes	174B	636	406280	fmrt	ia075	1973	1:15840
Bolan loam, 0 to 2 percent slopes	174	1420	406531	fn0x	ia081	1987	1:15840
Bolan loam, 2 to 5 percent slopes	174B	1096	406532	fn0y	ia081	1987	1:15840
Bolan loam, 5 to 9 percent slopes	474C	381	407166	fnpd	ia093	1989	1:15840
Bolan loam, 9 to 14 percent slopes, moderately eroded	474D2	306	407169	fnph	ia093	1989	1:15840
Bolan loam, 0 to 2 percent slopes	174	397	407619	fp50	ia099	1975	1:15840
Bolan loam, 2 to 5 percent slopes	174B	698	407973	fpjf	ia103	1979	1:15840
Bolan loam, loamy substratum, 2 to 5 percent slopes	974B	504	408069	fpmj	ia103	1979	1:15840
Bolan loam, 2 to 5 percent slopes	174B	2461	408116	fpp1	ia105	1988	1:15840
Bolan loam, 5 to 9 percent slopes	174C	611	408117	fpp2	ia105	1988	1:15840
Bolan loam, 2 to 5 percent slopes	174B	2331	2606431	fpp1	ia113	1970	1:15840
Bolan loam, 0 to 2 percent slopes	174	389	2606430	2qcs2	ia113	1970	1:15840
Bolan loam, 5 to 9 percent slopes	174C	179	2606432	fpp2	ia113	1970	1:15840
Bolan loam, 0 to 2 percent slopes	174	2264	408741	fqb6	ia115	1984	1:15840
Bolan loam, 2 to 5 percent slopes	174B	385	408742	fqb7	ia115	1984	1:15840
Bolan loam, 2 to 5 percent slopes	174B	2372	409078	fqp2	ia119	1973	1:15840
Bolan loam, 5 to 9 percent slopes, moderately eroded	174C2	976	409079	fqp3	ia119	1973	1:15840
Bolan loam, 0 to 2 percent slopes	174	221	409077	fqp1	ia119	1973	1:15840
Bolan loam, 9 to 14 percent slopes, moderately eroded	174D2	190	409080	fqp4	ia119	1973	1:15840
Bolan Loam, 2 to 5 percent slopes	174B	1	2474577	2p202	ia131	1971	1:15840
Bolan loam, 0 to 2 percent slopes	174	2977	409946	frl2	ia139	1986	1:15840
Bolan loam, 2 to 5 percent slopes	174B	1025	409947	frl3	ia139	1986	1:15840
Bolan loam, 5 to 14 percent slopes	474C	271	410079	frqc	ia141	1977	1:15840
Bolan loam, 2 to 5 percent slopes	474B	223	410078	frqb	ia141	1977	1:15840
Bolan loam, 5 to 9 percent slopes, moderately eroded	174C2	508	410770	fsfn	ia161	1975	1:15840
Bolan loam, 9 to 14 percent slopes, moderately eroded	174D2	465	410771	fsfp	ia161	1975	1:15840
Bolan loam, 2 to 5 percent slopes	174B	186	410769	fsfm	ia161	1975	1:15840
Bolan loam, 0 to 2 percent slopes	174	731	410915	fslb	ia163	1989	1:15840
Bolan loam, 2 to 5 percent slopes	474B	1610	411236	fsxp	ia167	1987	1:15840
Bolan loam, 5 to 9 percent slopes, moderately eroded	474C2	1017	411238	fsxr	ia167	1987	1:15840
Bolan variant loam, 5 to 9 percent slopes, moderately eroded	801C2	790	411257	fsyc	ia167	1987	1:15840
Bolan loam, 2 to 5 percent slopes, moderately eroded	474B2	733	411237	fsxq	ia167	1987	1:15840
Bolan variant loam, 9 to 14 percent slopes, moderately eroded	801D2	648	411258	fsyd	ia167	1987	1:15840
Bolan loam, 0 to 2 percent slopes	474	446	411235	fsxn	ia167	1987	1:15840
Bolan loam, 9 to 14 percent slopes, moderately eroded	474D2	421	411239	fsxs	ia167	1987	1:15840
Bolan variant loam, 2 to 5 percent slopes, moderately eroded	801B2	208	411256	fsyb	ia167	1987	1:15840
Bolan variant loam, 14 to 25 percent slopes, bouldery	801F	136	411259	fsyf	ia167	1987	1:15840
Bolan loam, 5 to 9 percent slopes	174C	409	411408	ft37	ia171	1989	1:15840
Bolan loam, 2 to 5 percent slopes	174B	114	411407	ft36	ia171	1989	1:15840
Bolan loam, 2 to 5 percent slopes	174B	2493	2398691	2lj14	ia195	2012	1:12000
Bolan loam, 0 to 2 percent slopes	174	856	2398690	2lj13	ia195	2012	1:12000

Map of Series Extent

Approximate geographic distribution of the BOLAN 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).