Soil Data Explorer - FALLBROOK

Official Series Description

Lab Data Summary

Aggregate lab data for the FALLBROOK soil series. This aggregation is based on all pedons with a current taxon name of FALLBROOK, 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 FALLBROOK 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
19	40A2856	S1964CA073002	FALLBROOK	5	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	33.3486099,-117.2369461
n/a	40A5293	S1964CA073006	Fallbrook	5	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 FALLBROOK 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 FALLBROOK 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 FALLBROOK 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 FALLBROOK 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).

Competing Series

Soil series competing with FALLBROOK 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 FALLBROOK 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 FALLBROOK 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).

Soil series sharing subgroup-level classification with FALLBROOK, 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 FALLBROOK 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
Cieneba-Fallbrook rocky sandy loams, 30 to 65 percent slopes, eroded	CnG2	103729	456782	hb9x	ca638	1967	1:24000
Fallbrook sandy loam, 9 to 15 percent slopes, eroded	FaD2	36885	456811	hbbv	ca638	1967	1:24000
Fallbrook sandy loam, 15 to 30 percent slopes, eroded	FaE2	25319	456812	hbbw	ca638	1967	1:24000
Cieneba-Fallbrook rocky sandy loams, 9 to 30 percent slopes, eroded	CnE2	20853	456781	hb9w	ca638	1967	1:24000
Fallbrook rocky sandy loam, 9 to 30 percent slopes, eroded	FeE2	10388	456816	hbc0	ca638	1967	1:24000
Fallbrook rocky sandy loam, 9 to 30 percent slopes	FeE	8526	456815	hbbz	ca638	1967	1:24000
Fallbrook-Vista sandy loams, 15 to 30 percent slopes	FvE	7951	456818	hbc2	ca638	1967	1:24000
Fallbrook sandy loam, 5 to 9 percent slopes, eroded	FaC2	7816	456810	hbbt	ca638	1967	1:24000
Fallbrook sandy loam, 5 to 9 percent slopes	FaC	6938	456809	hbbs	ca638	1967	1:24000
Fallbrook-Vista sandy loams, 9 to 15 percent slopes	FvD	6531	456817	hbc1	ca638	1967	1:24000
Fallbrook sandy loam, 9 to 30 percent slopes, severely eroded	FaE3	2909	456813	hbbx	ca638	1967	1:24000
Bonsall-Fallbrook sandy loams, 2 to 5 percent slopes	BnB	2397	456745	hb8q	ca638	1967	1:24000
Fallbrook rocky sandy loam, 5 to 9 percent slopes	FeC	1354	456814	hbby	ca638	1967	1:24000
Fallbrook sandy loam, 2 to 5 percent slopes	FaB	939	456808	hbbr	ca638	1967	1:24000
Fallbrook rocky sandy loam, shallow, 15 to 50 percents lopes, eroded	FcF2	586	723263	s8m2	ca638	1967	1:24000
Fallbrook fine sandy loam, 2 to 8 percent slopes, eroded	FfC2	1	757263	tdzv	ca638	1967	1:24000
Fallbrook very rocky sandy loam, 3 to 30 percent slopes	FcD	7606	464290	hl43	ca654	1966	1:24000
Fallbrook sandy loam, 9 to 15 percent slopes, moderatly deep, MLRA 18	FaC	5222	464285	2wp50	ca654	1966	1:24000
Fallbrook sandy loam, 3 to 9 percent slopes	FaB	3859	464284	hl3x	ca654	1966	1:24000
Fallbrook very rocky sandy loam, shallow, 3 to 30 percent slopes	FdD	2100	464292	hl45	ca654	1966	1:24000
Fallbrook very rocky sandy loam, shallow, 30 to 70 percent slopes	FdF	1814	464293	hl46	ca654	1966	1:24000
Fallbrook sandy loam, shallow, 9 to 30 percent slopes	FbD	1775	464289	hl42	ca654	1966	1:24000
Fallbrook very rocky sandy loam, 30 to 70 percent slopes	FcF	1694	464291	hl44	ca654	1966	1:24000
Vista-Fallbrook very rocky coarse sandy loams, 3 to 30 percent slopes	VoD	1686	464529	hlct	ca654	1966	1:24000
Fallbrook sandy loam, 15 to 30 percent slopes, moderately deep, MLRA 18	FaD	1296	464286	2wp4y	ca654	1966	1:24000
Vista-Fallbrook very rocky coarse sandy loams, 30 to 45 percent slopes	VoE	1090	464530	hlcv	ca654	1966	1:24000
Fallbrook sandy loam, shallow, 3 to 9 percent slopes	FbB	926	464288	hl41	ca654	1966	1:24000
Vista-Fallbrook extremely rocky coarse sandy loams, 30 to 70 percent slopes	VsF	907	464531	hlcw	ca654	1966	1:24000
Fallbrook extremely rocky sandy loam, 30 to 45 percent slopes	FeE	636	464294	hl47	ca654	1966	1:24000
Fallbrook sandy loam, 30 to 45 percent slopes	FaE	574	464287	hl40	ca654	1966	1:24000
Vista-Fallbrook coarse sandy loams, 9 to 30 percent slopes	VnD	454	464528	hlcs	ca654	1966	1:24000
Fallbrook-Rock outcrop complex, 9 to 50 percent slopes	129	5441	463594	hkdn	ca660	1977	1:24000
Fallbrook sandy loam, 30 to 50 percent slopes	128	1218	463593	hkdm	ca660	1977	1:24000
Fallbrook sandy loam, 15 to 30 percent slopes, MLRA 18	127	1169	463592	2wp4z	ca660	1977	1:24000
Fallbrook sandy loam, 9 to 15 percent slopes, MLRA 18	126	745	463591	2wp51	ca660	1977	1:24000
Fallbrook rocky sandy loam, shallow, 15 to 50 percent slopes, eroded	FcF2	13227	458237	hctv	ca679	1967	1:15840
Fallbrook sandy loam, 8 to 15 percent slopes, eroded	FaD2	6784	458232	hctp	ca679	1967	1:15840
Fallbrook fine sandy loam, 2 to 8 percent slopes, eroded	FfC2	4115	458238	hctw	ca679	1967	1:15840
Fallbrook fine sandy loam, shallow, 8 to 15 percent slopes, eroded	FkD2	4037	458239	hctx	ca679	1967	1:15840
Fallbrook sandy loam, shallow, 15 to 35 percent slopes, eroded	FbF2	2019	458235	hcts	ca679	1967	1:15840
Fallbrook rocky sandy loam, shallow, 8 to 15 percent slopes, eroded	FcD2	1458	458236	hctt	ca679	1967	1:15840
Fallbrook sandy loam, 15 to 25 percent slopes, eroded	FaE2	1251	458233	hctq	ca679	1967	1:15840
Fallbrook sandy loam, shallow, 5 to 8 percent slopes, eroded	FbC2	1157	458234	hctr	ca679	1967	1:15840
Vista-Fallbrook-Cieneba complex, 30 to 75 percent slopes	1148	8380	2670237	2rshp	ca696	2016	1:24000

Map of Series Extent

Approximate geographic distribution of the FALLBROOK 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).