Soil Data Explorer - RIVRA

Official Series Description

Lab Data Summary

Aggregate lab data for the RIVRA soil series. This aggregation is based on all pedons with a current taxon name of RIVRA, 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 RIVRA 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 RIVRA 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 RIVRA 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 RIVRA 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 RIVRA 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).

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

Competing Series

Soil series competing with RIVRA 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 RIVRA 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).

There are insufficient data to create the annual climate figure.

Geomorphic description summaries for the RIVRA 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 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 RIVRA, 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

No block diagrams are available.

Map Units

Map units containing RIVRA 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
Rivra complex, 0 to 2 percent slopes, occasionally flooded	681A	2002	343646	cjlc	mt017	1995	1:24000
Rivra complex, 0 to 2 percent slopes, frequently flooded	851A	2421	342702	chlx	mt033	2002	1:24000
Rivra complex, 0 to 2 percent slopes	107	3847	344783	cks1	mt079	1986	1:24000
Ryell-Rivra complex, 0 to 2 percent slopes	571A	576	345224	cl78	mt101	1992	1:24000
Banks soils	Bs	1888	345389	cldl	mt103	1961	1:20000
Havre-Rivra complex	28	3329	345543	clkk	mt105	1976	1:24000
Ryell, rarely flooded-Rivra, frequently flooded complex, 0 to 4 percent slopes	10B	2073	148090	4z33	mt604	2001	1:24000
Riverrun, occasionally flooded-Rivra complex, 0 to 2 percent slopes	60A	405	1697484	1tzck	mt604	2001	1:24000
Rivra complex, 0 to 4 percent slopes, occassionally flooded	111B	335	148201	4z6p	mt604	2001	1:24000
Rivra, stony-Riverrun complex, 0 to 2 percent slopes	161A	113	1697481	1tzcg	mt604	2001	1:24000
Ryell, rarely flooded-Rivra complex, cool, 0 to 2 percent slopes	110A	79	609158	nfw8	mt604	2001	1:24000
Rivra very gravelly sandy loam, cool, 2 to 4 percent slopes	105	22	1859648	20f3n	mt605	2007	1:24000
Rivra complex, 0 to 4 percent slopes, occasionally flooded	111B	1	1859492	20dym	mt605	2007	1:24000
Rivra gravelly loam	Rr	3531	147535	4yj6	mt609	1971	1:24000
Rivra-Mccabe-Bonebasin complex, 0 to 2 percent slopes	701A	106	147672	4ynm	mt609	1971	1:24000
Rivra-Ryell-Bonebasin complex, 0 to 2 percent slopes	301A	17	147666	4ynf	mt609	1971	1:24000
Rivra gravelly sandy loam	165	10310	341829	cgpr	mt613	1975	1:24000
Ryell-Rivra complex	172	4338	341837	cgq0	mt613	1975	1:24000
Straw-Rivra complex	185	2837	341851	cgqg	mt613	1975	1:24000
Rivra-Hanly complex, 0 to 2 percent slopes	99	2953	347015	cn31	mt615	1992	1:24000
Rivra-Mccabe-Bonebasin complex, 0 to 2 percent slopes	701A	5083	155668	56zk	mt622	1997	1:24000
Ryell-Rivra-Fairway complex, 0 to 2 percent slopes	304A	4173	155387	56ph	mt622	1997	1:24000
Fairway-Threeriv-Rivra complex, 0 to 2 percent slopes	508A	4014	155547	56vn	mt622	1997	1:24000
Rivra, moist-Ryell-Bonebasin, 0 to 2 percent slopes	401A	3590	155458	56rs	mt622	1997	1:24000
Meadowcreek-Rivra complex, 0 to 2 percent slopes	603A	2104	155616	56xw	mt622	1997	1:24000
Fairway-Rivra complex, 0 to 2 percent slopes	505A	1861	155544	56vk	mt622	1997	1:24000
Lamoose-Rivra-Bonebasin complex, 0 to 2 percent slopes	541A	1580	155585	56ww	mt622	1997	1:24000
Meadowcreek, slightly saline-Rivra complex, 0 to 2 percent slopes	503A	1519	155542	56vh	mt622	1997	1:24000
Greycliff-Rivra-Threeriv complex, 0 to 2 percent slopes	526A	1178	155572	56wg	mt622	1997	1:24000
Rivra-Ryell-Bonebasin complex, 0 to 2 percent slopes	301A	878	155386	56pg	mt622	1997	1:24000
Rivra-Emyd-Greycliff complex, 0 to 2 percent slopes, protected	801A	736	155733	571n	mt622	1997	1:24000
Rivra cobbly sandy loam, 2 to 6 percent slopes	201A	225	155316	56m6	mt622	1997	1:24000
Glendive-Meadowcreek-Rivra complex, cool, 0 to 2 percent slopes, occasionally flooded	105A	3165	1912573	2265x	mt624	2021	1:24000
Glendive-Meadowcreek-Rivra complex, 0 to 2 percent slopes, occasionally flooded	370A	1749	1912577	22661	mt624	2021	1:24000
Ryell-Rivra complex, 0 to 3 percent slopes	117A	3258	147688	4yp4	mt630	1991	1:24000
Rivra-Ryell-Havre complex, cool, 0 to 2 percent slopes	107	18993	146378	4x9w	mt636	1983	1:24000
Ryell-Rivra complex, cool, 0 to 2 percent slopes	110	6898	146382	4xb0	mt636	1983	1:24000
Rivra very gravelly sandy loam, cool, 2 to 4 percent slopes	105	5817	146376	4x9t	mt636	1983	1:24000
Ryell-Rivra sandy loams, cool, saline, 0 to 2 percent slopes	111	827	146383	4xb1	mt636	1983	1:24000
Riverrun-Rivra complex, 0 to 2 percent slopes	247	20	1697501	1tzd3	mt636	1983	1:24000
Glendive-McCabe-Rivra complex, 0 to 2 percent slopes, occasionally flooded	602A	5	2481353	2p91n	mt639	2000	1:24000
Ryell-Rivra complex, 0 to 2 percent slopes, occasionally flooded	111A	7190	348298	cpff	mt657	1990	1:24000
Rivra, occasionally flooded-Riverwash complex, 0 to 4 percent slopes	110B	6608	348297	cpfd	mt657	1990	1:24000
Ryell-Rivra complex, 0 to 2 percent slopes, rarely flooded	211A	2664	348439	cpkz	mt657	1990	1:24000
Glendive-McCabe-Rivra complex, 0 to 2 percent slopes, occasionally flooded	602A	4422	156943	589p	mt669		1:24000
Riverwash-Rivra complex, 0 to 2 percent slopes	1216A	1108	610335	nh37	mt669		1:24000
Urban land-Glendive, occasionally flooded-Rivra , occasionally flooded complex, 0 to 2 percent slopes	11A	349	886546	yrj8	mt669		1:24000
Varney-Rivra complex, 0 to 4 percent slopes	46A	637	1424625	1jtfn	mt670	2007	1:24000
Riverrun-Rivra complex, 0 to 2 percent slopes	60A	590	1424639	1jtg3	mt670	2007	1:24000
Varney, stony-Anamac, very stony-Rivra, extremely stony complex, 2 to 8 percent slopes	182C	529	1424689	1jthq	mt670	2007	1:24000
Rivra gravelly sandy loam, 0 to 4 percent slopes, moderately impacted	38B	497	320252	br7q	mt670	2007	1:24000
Rivra, stony-Riverrun complex, 0 to 2 percent slopes	61A	330	1424638	1jtg2	mt670	2007	1:24000
Anamac-Varney-Rivra, rarely flooded complex, 0 to 6 percent slopes	15B	276	320244	br7g	mt670	2007	1:24000
Rivra-Urban land complex, 0 to 6 percent slopes	252	728	502387	jvs1	wy625	1985	1:24000
Rivra sandy clay loam, 0 to 3 percent slopes	912		3017436	2xbrr	wy737		1:24000

Map of Series Extent

Approximate geographic distribution of the RIVRA 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).