Official Series Description


Lab Data Summary

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

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Pedons used in the lab summary:

MLRALab IDPedon IDTaxonnameCINSSL / NASIS ReportsLink To SoilWeb GMap
105UMN2337S1900MN0552337Coloma2Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties43.77985,-91.6766663
105UMN2352S1900MN0552352Coloma2Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties43.7801208,-91.6750412
105UMN2381S1900MN0552381Coloma3Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties43.7801208,-91.6747589
105UMN1739S1974MN1091739Coloma3Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties43.98172,-92.3080978
111CJR80101980IN073010Coloma2Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties40.9036917,-87.1348722
111DTI85231985IN157023Coloma2Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties40.4076778,-86.9542778
94AS79MI-85-1S1979MI085001Coloma6Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties43.9833861,-85.9034194
94A97P0140S1996MI101005Coloman/aPrimary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties44.2691667,-85.9255556
95B78P0515S1978WI137002Coloma7Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties44.0097237,-89.5667496
9714N1000S2014MI077001Coloma6Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties42.3637222,-85.7317222
98LP7402S1974IN091002Coloma3Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties41.3395278,-86.8665389
98SR7602S1976IN149002Coloma3Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties41.1959639,-86.7460417
98KO7706S1977IN085006Coloma3Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties41.3688778,-85.6574167
98S79MI-107-4S1979MI107004Coloma6Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties43.5998333,-85.5194722
98S80MI-73-3S1980MI073003Coloma5Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties43.6219167,-85.0370556
9894P0312S1993IN039015Coloma6Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties41.728611,-85.7338867
9811N0154S2010MI117002Coloma6Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties43.2600833,-85.0908056
9814N0999S2014MI107001Coloma6Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties43.6001944,-85.519

Water Balance

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

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Sibling Summary

Siblings are those soil series that occur together in map units, in this case with the COLOMA series. Sketches are arranged according to their subgroup-level taxonomic structure. Source: SSURGO snapshot , parsed OSD records and snapshot of SC database .

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Select annual climate data summaries for the COLOMA series and siblings. Series are sorted according to hierarchical clustering of median values. Source: SSURGO map unit geometry and 1981-2010, 800m PRISM data .

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Geomorphic description summaries for the COLOMA 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 .

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

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Click the image to view it full size.

Competing Series

Soil series competing with COLOMA share the same family level classification in Soil Taxonomy. Source: parsed OSD records and snapshot of the SC database .

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Select annual climate data summaries for the COLOMA series and competing. Series are sorted according to hierarchical clustering of median values. Source: SSURGO map unit geometry and 1981-2010, 800m PRISM data .

Click the image to view it full size.

Geomorphic description summaries for the COLOMA 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 .

Click the image to view it full size.

Click the image to view it full size.

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

Click the image to view it full size.

Click the image to view it full size.

Soil series sharing subgroup-level classification with COLOMA, 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 .

Block Diagrams

Click a link below to display the diagram. Note that these diagrams may be from multiple survey areas.

  1. IA-2010-09-09-07 | Bremer County - 2009

    Typical pattern of soils and parent material in the Spillville-Waukee-Coland association (Soil Survey of Bremer County, Iowa; 2009).

  2. IL-2010-09-01-85 | Woodford County - 1999

    Typical pattern of soils and parent material in the Alvin-Coloma-Jasper association (Soil Survey of Woodford County, Illinois; 1999).

  3. IN-2010-09-24-01 | Elkhart County -

    Typical pattern of soils and underlying material in the Tyner-Osolo-Brems association (Soil Survey of Elkhart County, Indiana).

  4. IN-2010-09-24-02 | Elkhart County -

    Typical pattern of soils and underlying material in the Bristol-Vistula-Bronson association (Soil Survey of Elkhart County, Indiana).

  5. IN-2010-09-27-01 | St. Joseph County -

    Typical pattern of soils and underlying material in the Tyner-Osolo-Brems association (Soil Survey of St. Joseph County, Indiana).

  6. IN-2010-09-27-04 | St. Joseph County -

    Typical pattern of soils and underlying material in the Coloma-Oshtemo-Brady association (Soil Survey of St. Joseph County, Indiana).

  7. IN-2010-09-27-07 | St. Joseph County -

    Typical pattern of soils and underlying material in the Tracy-Hillsdale-Tyner association (Soil Survey of St. Joseph County, Indiana).

  8. MI-2012-02-06-14 | Hillsdale County - 1997

    Typical pattern of soils and parent material in the Miami-Williamston-Conover association (Soil Survey of Hillsdale County, Michigan; 1997).

  9. MI-2012-02-06-15 | Hillsdale County - 1997

    Typical pattern of soils and parent material in the Coloma-Matherton-Gilford association (Soil Survey of Hillsdale County, Michigan; 1997).

Map Units

Map units containing COLOMA 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
Coloma loamy sand, 2 to 5 percent slopes, rarely flooded50B40416895871tq4tia01720081:12000
Coloma sand, 7 to 15 percent slopes689D3078188728021bw0il01120071:12000
Coloma sand, 1 to 7 percent slopes689B492188727921bvzil01120071:12000
Coloma sand, 2 to 7 percent slopes689B486796000vq9fil01520051:12000
Coloma sand, 20 to 30 percent slopes689F450796003vq9jil01520051:12000
Coloma sand, 7 to 15 percent slopes689D11314157741jj74il01520051:12000
Coloma sand, 1 to 7 percent slopes689B12336632708p7cyil07120051:12000
Coloma sand, 7 to 15 percent slopes689D370314123621jdp2il07120051:12000
Coloma sand, 0 to 2 percent slopes689A142914805231lpltil07120051:12000
Coloma sand, 1 to 7 percent slopes689B2009632791p7gmil07320011:12000
Coloma sand, 7 to 15 percent slopes689D612632792p7gnil07320011:12000
Coloma sand, 20 to 30 percent slopes689F238202364325xrtil08519901:12000
Coloma sand, 1 to 7 percent slopes689B7463114515417fmgil10320041:12000
Coloma sand, 7 to 15 percent slopes689D3998114515517fmhil10320041:12000
Coloma sand, 20 to 30 percent slopes689F379114515617fmjil10320041:12000
Coloma sand, 1 to 7 percent slopes689B443924500686yfil13120001:12000
Coloma sand, 7 to 15 percent slopes689D66224500786ygil13120001:12000
Coloma sand, 20 to 60 percent slopes689G47024500886yhil13120001:12000
Coloma sand, 7 to 15 percent slopes689D112314789591lmzcil14120051:12000
Coloma sand, 1 to 7 percent slopes689B70314789581lmzbil14120051:12000
Coloma sand, 1 to 7 percent slopes689B274632973p7nhil16120021:12000
Coloma sand, 7 to 15 percent slopes689D128632972p7ngil16120021:12000
Coloma sand, 1 to 7 percent slopes689B121917942360pvil17919911:15840
Coloma sand, 1 to 7 percent slopes689B2296793678vmwjil19520031:12000
Coloma sand, 7 to 15 percent slopes689D710793679vmwkil19520031:12000
Coloma sand, 1 to 7 percent slopes689B807869245y5j5il20320081:12000
Coloma sand, 7 to 15 percent slopes689D368869246y5j6il20320081:12000
Coloma loamy sand, 2 to 10 percent slopesCtB6971651565jvmin01519871:15840
Coloma sand, 0 to 2 percent slopesCnbA45851653462w63win03919971:12000
Coloma sand, 2 to 5 percent slopesCnbB39461653472w63yin03919971:12000
Coloma sand, 5 to 10 percent slopesCnbC19451653482w640in03919971:12000
Coloma loamy sand, 6 to 15 percent slopesCnaC306242384846vin04519991:12000
Coloma loamy sand, 2 to 6 percent slopesCnaB288242383846tin04519991:12000
Coloma loamy sand, 0 to 6 percent slopes, fine-loamy minor componentsClB32901608582w644in08519851:20000
Coloma loamy sand, 6 to 12 percent slopes, fine-loamy minor componentsClC7931608592w646in08519851:20000
Coloma sand, 2 to 5 percent slopesCnbB325817025432w63yin09919781:15840
Coloma sand, 5 to 10 percent slopesCnbC232117025442w640in09919781:15840
Urban land-Coloma complex, 2 to 5 percent slopesUfhB21424855162pfcyin09919781:15840
Coloma sand, 0 to 2 percent slopesCnbA12424957032w63win09919781:15840
Urban land-Coloma complex, 5 to 10 percent slopesUfhC6724855172pfczin09919781:15840
Coloma sand, 2 to 5 percent slopesCnbB68186251152w63yin14120011:12000
Coloma sand, 5 to 10 percent slopesCnbC18426251142w640in14120011:12000
Urban land-Coloma complex, 0 to 2 percent slopesUfhA1539625409nzshin14120011:12000
Urban land-Coloma complex, 2 to 5 percent slopesUfhB1521627869p2bvin14120011:12000
Urban land-Coloma complex, 5 to 10 percent slopesUfhC805625408nzsgin14120011:12000
Coloma sand, 0 to 2 percent slopesCnbA49124819342w63win14120011:12000
Coloma sand, 10 to 18 percent slopesCnbD39625113nzgyin14120011:12000
Coloma sand, 0 to 6 percent slopes, nonspodic minor componentsChB13121626082w63vin14919801:15840
Coloma sand, 6 to 15 percent slopesCrC3501639165hkmin15719901:15840
Coloma loamy sand, 0 to 6 percent slopes57B137731861072w643mi01519881:15840
Coloma loamy sand, 6 to 12 percent slopes57C97861861082w645mi01519881:15840
Coloma-Boyer loamy sands, 18 to 40 percent slopes58E795118611467npmi01519881:15840
Coloma loamy sand, 12 to 18 percent slopes57D59691861092w647mi01519881:15840
Coloma-Boyer loamy sands, 0 to 6 percent slopes58B586718611167nlmi01519881:15840
Coloma-Boyer loamy sands, 6 to 12 percent slopes58C460718611267nmmi01519881:15840
Coloma-Boyer loamy sands, 12 to 18 percent slopes58D458418611367nnmi01519881:15840
Coloma loamy sand, 18 to 40 percent slopes57E457618611067nkmi01519881:15840
Coloma-Marlette complex, 18 to 40 percent slopes68E182918612767p3mi01519881:15840
Coloma-Marlette complex, 6 to 12 percent slopes68C119118612567p1mi01519881:15840
Coloma-Marlette complex, 12 to 18 percent slopes68D81218612667p2mi01519881:15840
Coloma-Marlette complex, 0 to 6 percent slopes68B55518612467p0mi01519881:15840
Coloma loamy sand, 0 to 6 percent slopes12B58801886702w643mi02519931:15840
Coloma loamy sand, 6 to 12 percent slopes12C31571886712w645mi02519931:15840
Coloma loamy sand, 12 to 18 percent slopes12D17011886722w647mi02519931:15840
Urban land-Coloma complex, 0 to 6 percent slopes113B16791886686bb2mi02519931:15840
Coloma loamy sand, 18 to 40 percent slopes12E10321886736bb7mi02519931:15840
Urban land-Coloma complex, 6 to 12 percent slopes113C4281886696bb3mi02519931:15840
Coloma-Boyer loamy sands, 12 to 18 percent slopes90D2501887366bd8mi02519931:15840
Coloma-Boyer loamy sands, 6 to 12 percent slopes90C2081887356bd7mi02519931:15840
Coloma-Boyer loamy sands, 0 to 6 percent slopes90B1781887346bd6mi02519931:15840
Coloma loamy sand, 0 to 6 percent slopes40B40941869352w643mi02719881:15840
Coloma loamy sand, 6 to 12 percent slopes40C20181869362w645mi02719881:15840
Coloma sand, 0 to 6 percent slopes50B58421886616b9vmi05919911:15840
Coloma sand, 6 to 18 percent slopes50C42051886626b9wmi05919911:15840
Coloma sand, 18 to 35 percent slopes50E8051886636b9xmi05919911:15840
Coloma loamy sand, 0 to 6 percent slopesCnB13251879212w643mi06719651:15840
Coloma sand, 0 to 6 percent slopesCoB12471879252w63tmi06719651:15840
Coloma sand, 6 to 12 percent slopesCoC24821879272w63zmi06719651:15840
Coloma loamy sand, 6 to 12 percent slopesCnC22231879232w645mi06719651:15840
Coloma sand, 0 to 6 percent slopes12B147641865952w63tmi07319831:15840
Coloma sand, 6 to 12 percent slopes12C61181865962w63zmi07319831:15840
Coloma sand, 18 to 35 percent slopes12E35961865982w642mi07319831:15840
Coloma sand, 12 to 18 percent slopes12D25551865976858mi07319831:15840
Woodbeck-Coloma complex, 1 to 6 percent slopes66B1209186582684smi07319831:15840
Woodbeck-Coloma complex, 6 to 12 percent slopes66C548186583684tmi07319831:15840
Coloma loamy sand, 0 to 6 percent slopesCoB97761870582w643mi07719781:15840
Coloma loamy sand, 6 to 12 percent slopesCoC77361870592w645mi07719781:15840
Coloma loamy sand, 12 to 18 percent slopesCoD59251870602w647mi07719781:15840
Spinks-Coloma loamy sands, 18 to 35 percent slopesStE303218708668p1mi07719781:15840
Spinks-Coloma sands, 0 to 6 percent slopes47B78401925622w648mi10519921:15840
Spinks-Coloma sands, 6 to 12 percent slopes47C60371925632w649mi10519921:15840
Spinks-Coloma sands, 12 to 18 percent slopes47D36251925646gcrmi10519921:15840
Spinks-Coloma sands, 18 to 40 percent slopes47E24961925656gcsmi10519921:15840
Coloma sand, 0 to 6 percent slopes63B20351925862w63tmi10519921:15840
Coloma-Scalley complex, 6 to 12 percent slopes94C8891926196gfjmi10519921:15840
Coloma-Scalley complex, 2 to 6 percent slopes94B7781926186gfhmi10519921:15840
Coloma sand, 6 to 12 percent slopes63C7271925872w63zmi10519921:15840
Coloma-Scalley complex, 12 to 18 percent slopes94D3461926206gfkmi10519921:15840
Coloma sand, 12 to 18 percent slopes63D2261925886gdjmi10519921:15840
Coloma sand, 18 to 35 percent slopes63E1781925892w642mi10519921:15840
Coloma sand, 0 to 6 percent slopes11B449091877052w63tmi10719821:15840
Coloma sand, 6 to 18 percent slopes11C360841877062w641mi10719821:15840
Coloma sand, 18 to 35 percent slopes11E35361877072w642mi10719821:15840
Coloma loamy sand, loamy substratum, 0 to 6 percent slopes45B199318775069cgmi10719821:15840
Metea-Coloma loamy sand, 6 to 18 percent slopes50C119818775969crmi10719821:15840
Coloma-Brems-Fern complex, 0 to 6 percent slopesClmaaB266627632492tpkbmi12119661:15840
Coloma-Brems-Metea complex, 6 to 12 percent slopesClmaaC44827632502tpkcmi12119661:15840
Coloma sand, 0 to 6 percent slopes29B282831864612w63tmi12319901:15840
Coloma sand, 6 to 12 percent slopes29C274861864622w63zmi12319901:15840
Spinks-Metea-Coloma complex, 6 to 12 percent slopes17C9169186446680dmi12319901:15840
Coloma sand, 12 to 30 percent slopes29D8872186463680ymi12319901:15840
Spinks-Metea-Coloma complex, 1 to 6 percent slopes17B5983186445680cmi12319901:15840
Grattan-Coloma complex, 0 to 6 percent slopes130B212518642867ztmi12319901:15840
Grattan, banded substratum-Coloma complex, 6 to 18 percent slopes131C160418643267zymi12319901:15840
Grattan-Coloma complex, 6 to 18 percent slopes130C93618642967zvmi12319901:15840
Grattan, banded substratum-Coloma complex, 0 to 6 percent slopes131B60718643167zxmi12319901:15840
Grattan-Coloma complex, 18 to 30 percent slopes130E24018643067zwmi12319901:15840
Grattan, banded substratum-Coloma complex, 18 to 30 percent slopes131E16718643367zzmi12319901:15840
Coloma sand, 6 to 18 percent slopes60C41731890682w641mi12719921:15840
Coloma sand, 0 to 6 percent slopes60B29361890672w63tmi12719921:15840
Coloma-Toogood complex, 0 to 6 percent slopes40B12851890276bpnmi12719921:15840
Coloma sand, 18 to 35 percent slopes60E4271890692w642mi12719921:15840
Coloma-Toogood complex, 0 to 6 percent slopes, lake moderated104B13632236862zdhtmi12719921:15840
Coloma-Toogood complex, 6 to 12 percent slopes40C1231890286bppmi12719921:15840
Coloma-Toogood complex, 12 to 18 percent slopes40D1041890296bpqmi12719921:15840
Coloma sand, 0 to 6 percent slopesChB74371900022w63tmi13319661:15840
Coloma sand, 6 to 12 percent slopesChC56051900032w63zmi13319661:15840
Coloma sand, 18 to 35 percent slopesChE26941900052w642mi13319661:15840
Coloma loamy sand, 0 to 6 percent slopesChB80121926512w643mi13919671:15840
Coloma loamy sand, 6 to 12 percent slopesChC3191926522w645mi13919671:15840
Coloma loamy sand, 0 to 6 percent slopes3B228731863222w643mi15919841:15840
Oshtemo-Coloma loamy sands, 12 to 18 percent slopes6D883918634867x7mi15919841:15840
Coloma loamy sand, 6 to 12 percent slopes3C80991863232w645mi15919841:15840
Oshtemo-Coloma loamy sands, 18 to 25 percent slopes6E333018634967x8mi15919841:15840
Urban land-Coloma complex, 0 to 6 percent slopes64B212118634367x2mi15919841:15840
Coloma sand, 0 to 6 percent slopes29B869631907632w63tmi60019831:15840
Coloma sand, 6 to 18 percent slopes29D154451907642w641mi60019831:15840
Coloma sand, 0 to 6 percent slopes63B123581932752w63tmi61420051:12000
Spinks-Coloma sands, 6 to 12 percent slopes47C122011932562w649mi61420051:12000
Spinks-Coloma sands, 0 to 6 percent slopes47B118691932552w648mi61420051:12000
Coloma-Tatches complex, 0 to 6 percent slopes21B6638680941qvkvmi61420051:12000
Spinks-Coloma sands, 12 to 18 percent slopes47D51941932576h33mi61420051:12000
Coloma sand, 6 to 12 percent slopes63C39881932762w63zmi61420051:12000
Spinks-Coloma sands, 18 to 35 percent slopes47E39351932586h34mi61420051:12000
Coloma sand, 12 to 18 percent slopes63D14091931726h0cmi61420051:12000
Coloma sand, 18 to 35 percent slopes63E11461931712w642mi61420051:12000
Spinks-Coloma sands, 35 to 70 percent slopes47F8051933496h62mi61420051:12000
Coloma sand, 35 to 70 percent slopes63F490899711z66ymi61420051:12000
Coloma loamy sand, 0 to 6 percent slopesN625B40216904561tr1vmn04920071:12000
Coloma sand, 2 to 6 percent slopesCoB29061422929g62wwi00119781:20000
Coloma sand, 6 to 12 percent slopesCoC8572422930g62xwi00119781:20000
Coloma sand, 12 to 25 percent slopesCoD5751422931g62ywi00119781:20000
Coloma loamy sand, 6 to 12 percent slopesCoC82724265102t053wi09719721:20000
Coloma loamy sand, 2 to 6 percent slopesCoB50484265092vcmjwi09719721:20000
Coloma loamy sand, 6 to 12 percent slopesCoC83814239542t053wi13719861:20000
Coloma loamy sand, 2 to 6 percent slopesCoB56784239532vcmjwi13719861:20000
Coloma loamy sand, 12 to 30 percent slopesCoD3657423955g74zwi13719861:20000

Map of Series Extent

Approximate geographic distribution of the COLOMA 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 .