ELT 21a

Elevation Range
Minimum: 
1043 m
Minimum in ft: 
3422 ft
Maximum: 
1074 m
Maximum in ft: 
3523 ft
Median: 
1062 m
Median in ft: 
3484 ft
Soil Summary: 
very deep, textures vary widely and soils are often stratified – very fine sandy loam to silty clay surfaces with very gravelly coarse sand to silty clay layers below, limy, no or little development, some high water tables on lower terraces; dominated by Cochise County, Northwestern Part soil survey units 48 (Hantz complex,Chihuahuan, 0 to 2 percent), 17 (Cascabel, Quiburi soils, and Riverwash, Chihuahuan, 0 to 5 percent slopes), 43 (Glendale-Hantz complex, Chihuahuan, 0 to 3 percent slopes), 40 (Gila-Glendale complex, Chihuahuan, 0 to 2 percent slopes), and 50 (Hantz silt loam, saline-sodic, 0 to 3 percent slopes). These units comprise 34%, 26%, 20%, 9% and 7% of the ELT, respectively
Geologic Materials: 
river alluvium associated with active channel and Holocene terraces (Qyr), late Holocene river deposits (Qy2r, Qy2f), Holocene alluvium (Qy), and late Holocene alluvium (Qy2) which comprise 25%, 30%, 28% and 17% of the LTA, respectively
Landforms: 
coarsely dissected, weakly to moderately incised mainly on river terrace breaks; terraces themselves show little dissection
LTA 21
Moderate gradient river channel and terraces

Map with the ELT 21a polygon highlighted.

Catalina