Searches use the specialized syntax of PostgreSQL fulltext indexing and query system. Multiple MLRA symbols should be given as a comma-delimited list without spaces. Searches are limited to the top 100 matches; open-ended queries could return many thousands of results.

Notes

• MLRA are derived via spatial intersection (SSURGO x MLRA polygons)
• MLRA-filtering is only possible for series used in the current SSURGO snapshot (component name)
• logical AND: &
• logical OR: |
• wildcard, e.g. rhy-something rhy:*
• search terms with spaces need doubled single quotes: ''san joaquin''
• combine search terms into a single expression: (grano:* | granite)
• exclude words or compound expressions: !

Example Queries

• iowa & smectitic & verti:* & Cg & ! saturated
• iowa & smectitic & verti:* & Cg & terrace
• (sulfi:* | sulfa:*) & aq:*
• Coarse-loamy & mixed & active & thermic & Mollic & Haploxeralfs
• sierra & nevada & (meta:* | metamorphic) & xer:* & thermic & lithic
• sierra & nevada & foothill & (grano:* | granite) & thermic
• rhyo:* & tuff:* & California & thermic
• paralithic & thermic & !mesic & mollic & epipedon
• (gypsum | gyp:*) (MLRA: 15,17)
• flood & plains & toe & slope