Hydrologic Soil Group

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Bruce Morris
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name 1A Fluvaquents-Udifluvents complex, 0 to 3 A/D 85, frequently flooded 2A Geneseo silty clay loam, 0 to 3 C 90 3A Hemlock silty clay loam, 0 to 3 C/D 90 4A Naples Creek silty clay loam, 0 to 3

1 name 1A Fluvaquents-Udifluvents complex, 0 to 3 A/D 85, frequently flooded 2A Geneseo silty clay loam, 0 to 3 C 90 3A Hemlock silty clay loam, 0 to 3 C/D 90 4A Naples Creek silty clay loam, 0 to 3 B/D 95 5A Wayland soils complex, 0 to 3, B/D 100 frequently flooded 12D Rockrift channery silt loam, 15 to 25 B 85 13F Rock outcrop-arnot complex, 25 to D Cadosia channery silt loam, 15 to 25 B 85 15A Guyanoga channery silt loam, fan, 0 to 3 B 90 15B Guyanoga channery silt loam, fan, 3 to 8 B 90 16A Almond channery silt loam, 0 to 3 C/D 85 16B Almond channery silt loam, 3 to 8 C/D 85 16C Almond channery silt loam, 8 to 15 C/D 85 18A Homer fine sandy loam, 0 to 3 B/D A Fine-loamy, mixed, active, mesic, Typic Argiaquolls, B/D 95 0 to 3 20A Atherton and Fine-loamy, mixed, active, mesic, Typic B/D 88 Argiaquolls, 0 to 3 24A Howard gravelly loam, 0 to 3 A 85 24B Howard gravelly loam, 3 to 8 A 85 24C Howard gravelly loam, 8 to 15 A 85 24D Howard soils, 15 to 25 A 78 25A Chenango gravelly loam, 0 to 3 A 90 25B Chenango gravelly loam, 3 to 8 A 90 25C Chenango gravelly loam, 8 to 15 A 90 25D Chenango gravelly loam, 15 to 25 A 90 25E Chenango gravelly loam, 25 to 35 A 90 26B Chenango channery loam, fan, 3 to 8 A 85 27B Castile gravelly silt loam, 3 to 8 A/D 85 31A Collamer silt loam, 0 to 3 C/D B Collamer silt loam, 3 to 8 B/D 85 31C Collamer silt loam, 8 to 15 B/D 85 31D Collamer silt loam, 15 to 25 B/D 90 32A Dunkirk fine sandy loam, 0 to 3 C 90 32B Dunkirk fine sandy loam, 3 to 8 C 90 33A Dunkirk silt loam, 0 to 3 C 90 33B Dunkirk silt loam, 3 to 8 C 90 33C Dunkirk silt loam, 8 to 15 C 90 33D Dunkirk silt loam, 15 to 25 C 90 33E Dunkirk silt loam, 25 to 35 C 90 34A Lakemont silty clay loam, 0 to 3 D 85 35A Odessa silt loam, 0 to 3 D 95 35B Odessa silty clay loam, 3 to 8 D 95 36A Schoharie silty clay loam, 0 to 3 C/D 90 36B Schoharie silty clay loam, 3 to 8 C/D 90 Page 1 of 6

2 name 36C Schoharie silty clay loam, 8 to 15 C/D 90 36D Schoharie silty clay loam, 15 to 25 C/D 90 36E Schoharie silty clay loam, 25 to 45 C/D 90 37A Schoharie silt loam, 0 to 3 C/D 95 37B Schoharie silt loam, 3 to 8 C/D 95 38A Niagara silt loam, 0 to 3 C/D B Niagara silt loam, 3 to 8 C/D 95 39A Rhinebeck silty clay loam, 0 to 3 C/D A Aeric Epiaquepts, 0 to 3 C/D 95 43A Canandaigua silt loam, 0 to 3 C/D A Canandaigua mucky silt loam, 0 to 3 C/D 98 45A Fonda mucky silt loam, 0 to 3 C/D 98 46A Galen fine sandy loam, 0 to 3 A/D 90 46B Galen fine sandy loam, 3 to 8 A/D 90 48A Arkport fine sandy loam, 0 to 3 A 95 48B Arkport fine sandy loam, 3 to 8 A 95 48C Arkport fine sandy loam, 8 to 15 A 95 48D Arkport fine sandy loam, 15 to 25 A 90 49B Arkport loamy fine sand, 3 to 8 A 95 49D Arkport loamy fine sand, 15 to 25 A 95 49E Arkport loamy fine sand, 25 to 35 A 90 49F Arkport loamy fine sand, 35 to 55 A 90 50B Dunkirk-Arkport complex, 3 to 8 C 50 50C Dunkirk-Arkport complex, 8 to 15 C 60 50D Dunkirk-Arkport complex, 15 to 25 C 60 53A Lamson fine sandy loam, 0 to 3 B/D 95 54A Lamson mucky fine sandy loam, 0 to 3 B/D 95 56A Elnora loamy fine sand, 0 to 3 B 90 58B Colonie loamy fine sand, 3 to 8 A 95 58C Colonie loamy fine sand, 8 to 15 A 95 62B Mardin channery silt loam, 3 to 8 D 90 62C Mardin channery silt loam, 8 to 15 D 93 62D Mardin channery silt loam, 15 to 25 D 90 62E Mardin channery silt loam, 25 to 35 D 85 63B Langford channery silt loam, 3 to 8 C/D 90 63C Langford channery silt loam, 8 to 15 pecent C/D 90 63D Langford channery silt loam, 15 to 25 C/D 90 64B Langford-Erie channery silt loams, 3 to 8 C/D 55 66A Lyons soils, 0 to 3 C/D 99 68A Volusia channery silt loam, 0 to 3 D B Volusia channery silt loam, 3 to 8 D C Volusia channery silt loam, 8 to 15 D D Volusia channery silt loam, 15 to 25 D A Erie channery silt loam, 0 to 3 D B Erie channery silt loam, 3 to 8 D C Erie channery silt loam, 8 to 15 D 100 Page 2 of 6

3 name 71A Darien silt loam, 0 to 3 C/D 99 71B Darien silt loam, 3 to 8 C/D 99 71C Darien silt loam, 8 to 15 C/D 99 72A Darien-Ilion silt loams, 0 to 3 C/D 95 72B Darien-Ilion silt loams, 3 to 8 C/D 95 73B Gretor silt loam, 3 to 8 C/D C Gretor silt loam, 8 to 15 C/D D Gretor channery silt loam, 15 to 25 C/D 92 76B Orpark silt loam, 3 to 8 D C Orpark silt loam, 8 to 15 D D Orpark channery silt loam, 15 to 25 D 95 77A Chippewa silt loam, 0 to 3 D B Chippewa silt loam, 3 to 8 D B Manlius channery silt loam, 3 to 8 C 95 82C Manlius channery silt loam, 8 to 15 C 95 82D Manlius channery silt loam, 15 to 25 C 95 91A Palms muck, 0 to 3 A/D 95 92A Carlisle muck, 0 to 3 A/D 95 93A Edwards muck, 0 to 3 C/D A Martisco muck, 0 to 3 C/D 95 95A Saprists, 0 to 3, inundated A/D A Honeoye loam, 0 to 3 B B Honeoye loam, 3 to 8 B C Honeoye loam, 8 to 15 B D Honeoye loam, 15 to 25 B E Honeoye loam, 25 to 35 B A Honeoye loam, 0 to 3, lower clay B 89 surface 104B Honeoye loam, 3 to 8, lower clay B 89 surface 104C Honeoye loam, 8 to 15, lower clay B 89 surface 106B Danley-Lansing complex, 3 to 8 C/D B Conesus-Lansing complex, 3 to 8 B/D C Lansing loam, 8 to 15 B D Lansing loam, 15 to 25 B E Lansing loam, 25 to 35 B B Ontario fine sandy loam, 3 to 8 C C Ontario fine sandy loam, 8 to 15 C D Ontario fine sandy loam, 15 to 25 C E Ontario fine sandy loam, 25 to 35 C B Ontario gravelly loam, 3 to 8 C C Ontario gravelly loam, 8 to 15 C D Ontario gravelly loam, 15 to 25 C B Ontario loam, 3 to 8 C C Ontario loam, 8 to 15 C D Ontario loam, 15 to 25 C 95 Page 3 of 6

4 name 118F Ontario, Honeoye, and Lansing soils, 35 to 55 B E Palmyra and Howard soils, 25 to 45 B A Palmyra cobbly loam, 0 to 3 B B Palmyra cobbly loam, 3 to 8 B A Palmyra fine sandy loam, 0 to 3 B B Palmyra fine sandy loam, 3 to 8 B A Palmyra gravelly loam, 0 to 3 B B Palmyra gravelly loam, 3 to 8 B C Palmyra gravelly loam, 8 to 15 B D Palmyra gravelly loam, 15 to 25 B A Palmyra gravelly sandy loam, 0 to 3 B B Palmyra gravelly sandy loam, 3 to 8 B C Palmyra gravelly sandy loam, 8 to 15 B A Farmington loam, 0 to 3 D B Farmington loam, 3 to 8 D A Galoo loam, 0 to 3, rocky D B Galoo loam, 3 to 8, rocky D A Camillus silt loam, 0 to 3 C B Camillus silt loam, 3 to 8 C C Willdin-Norchip complex, 3 to 15 D B Valois gravelly loam, 3 to 8 B C Valois gravelly loam, 8 to 15 B D Valois gravelly loam, 15 to 25 B E Valois gravelly loam, 25 to 35 B B Valois gravelly loam, cool, 3 to 8 B C Valois gravelly loam, cool, 8 to 15 B D Valois gravelly loam, cool, 15 to 25 B E Valois gravelly loam, cool, 25 to 35 B B Willdin channery silt loam, 3 to 8 D C Willdin channery silt loam, 8 to 15 D D Willdin channery silt loam, 15 to 25 D A Ontusia channery silt loam, 0 to 3 D B Ontusia channery silt loam, 3 to 8 D C Ontusia channery silt loam, 8 to 15 D D Ontusia channery silt loam, 15 to 25 D C Lordstown-Manlius-Towerville complex, 8 to 15 C D Lordstown-Manlius-Towerville complex, 15 to 25 C 60, very stony 171E Lordstown-Manlius-Towerville complex, 25 to 35 C 60, extremely stony 171F Lordstown-Manlius-Towerville complex, 35 to 80 C 60, extremely stony 177A Norchip silt loam, 0 to 3 D B Norchip silt loam, 3 to 8 D B Mongaup-Ischua complex, 3 to 8 C C Mongaup-Ischua complex, 8 to 15 C 45 Page 4 of 6

5 name 181D Mongaup-Ischua complex, 15 to 25, C 45 very stony 181E Mongaup-Ischua complex, 25 to 35, C 45 extremely stony 182B Mongaup channery loam, 3 to 8 C C Mongaup channery loam, 8 to 15 C A Lima loam, 0 to 3 B/D B Lima loam, 3 to 8 B/D C Lima loam, 8 to 15 B/D A Lima loam, 0 to 3, lower clay surface B/D B Lima loam, 3 to 8, lower clay surface B/D A Phelps gravelly silt loam, 0 to 3 B/D B Phelps gravelly silt loam, 3 to 8 B/D A Nuhi silt loam, 0 to 3 C/D B Aurora-Angola silt loams, 3 to 8 D C Aurora-Angola silt loams, 8 to 15 D D Aurora-Angola silt loams, 15 to 25 D B Aurora silt loam, 3 to 8 D C Aurora silt loam, 8 to 15 D D Aurora silt loam, 15 to 25 D B Cazenovia silt loam, 3 to 8 C/D C Cazenovia silt loam, 8 to 15 C/D D Cazenovia silt loam, 15 to 25 C/D B Cayuga silt loam, 3 to 8 C/D C Cayuga silt loam, 8 to 15 C/D D Cayuga silt loam, 15 to 25 C/D A Kendaia loam, 0 to 3 B/D B Kendaia loam, 3 to 8 B/D A Angola silt loam, 0 to 3 D A Ovid silt loam, 0 to 3 C/D B Ovid silt loam, 3 to 8 C/D B Ovid silty clay loam, 3 to 8 C/D C Ovid silty clay loam, 8 to 15 C/D A Udorthents, loamy, 0 to 3 A D Udorthents, refuse substratum. 0 to PG Pits, gravel and sand 75 PQ Pits, quarry 80 W Water 100 Page 5 of 6

6 Options Attribute Name: Hydrologic soil groups are based on estimates of runoff potential. Soils are assigned to one of four groups according to the rate of water infiltration when the soils are not protected by vegetation, are thoroughly wet, and receive precipitation from long-duration storms. The soils in the United States are assigned to four groups (A, B, C, and D) and three dual classes (A/D, B/D, and C/D). The groups are defined as follows: Group A. Soils having a high infiltration rate (low runoff potential) when thoroughly wet. These consist mainly of deep, well drained to excessively drained sands or gravelly sands. These soils have a high rate of water transmission. Group B. Soils having a moderate infiltration rate when thoroughly wet. These consist chiefly of moderately deep or deep, moderately well drained or well drained soils that have moderately fine texture to moderately coarse texture. These soils have a moderate rate of water transmission. Group C. Soils having a slow infiltration rate when thoroughly wet. These consist chiefly of soils having a layer that impedes the downward movement of water or soils of moderately fine texture or fine texture. These soils have a slow rate of water transmission. Group D. Soils having a very slow infiltration rate (high runoff potential) when thoroughly wet. These consist chiefly of clays that have a high shrink-swell potential, soils that have a high water table, soils that have a claypan or clay layer at or near the surface, and soils that are shallow over nearly impervious material. These soils have a very slow rate of water transmission. If a soil is assigned to a dual hydrologic group (A/D, B/D, or C/D), the first letter is for drained areas and the second is for undrained areas. Only the soils that in their natural condition are in group D are assigned to dual classes. Aggregation is the process by which a set of component attribute values is reduced to a single value to represent the map unit as a whole. A map unit is typically composed of one or more "components". A component is either some type of soil or some nonsoil entity, e.g., rock outcrop. The components in the map unit name represent the major soils within a map unit delineation. Minor components make up the balance of the map unit. Great differences in soil properties can occur between map unit components and within short distances. Minor components may be very different from the major components. Such differences could significantly affect use and management of the map unit. Minor components may or may not be documented in the database. The results of aggregation do not reflect the presence or absence of limitations of the components which are not listed in the database. An on-site investigation is required to identify the location of individual map unit components. For each of a map unit's components, a corresponding composition is recorded. A composition of 60 indicates that the corresponding component typically makes up approximately 60% of the map unit. Percent composition is a critical factor in some, but not all, aggregation methods. For the attribute being aggregated, the first step of the aggregation process is to derive one attribute value for each of a map unit's components. From this set of component attributes, the next step of the aggregation process derives a single value that represents the map unit as a whole. Once a single value for each map unit is derived, a thematic map for soil map units can be generated. Aggregation must be done because, on any soil map, map units are delineated but components are not. The aggregation method "Dominant Condition" first groups like attribute values for the components in a map unit. For each group, composition is set to the sum of the composition of all components participating in that group. These groups now represent "conditions" rather than components. The attribute value associated with the group with the highest cumulative composition is returned. If more than one group shares the highest cumulative composition, the corresponding "tie-break" rule determines which value should be returned. The "tie-break" rule indicates whether the lower or higher group value should be returned in the case of a composition tie. The result returned by this aggregation method represents the dominant condition throughout the map unit only when no tie has occurred. The tie-break rule indicates which value should be selected from a set of multiple candidate values, or which value should be selected in the event of a composition tie. Page 6 of 6

Surface Texture. Layer Option: Surface Layer Aggregation Method: Dominant Condition Tie-break Rule: Lower

Surface Texture. Layer Option: Surface Layer Aggregation Method: Dominant Condition Tie-break Rule: Lower name 1A Fluvaquents-Udifluvents complex, 0 to 3 Gravelly loam 45, frequently flooded 2A Geneseo silty clay loam, 0 to 3 Silty clay loam 100 3A Hemlock silty clay loam, 0 to 3 Silty clay loam 100 4A Naples