Hydromodification Plan (HMP) Exemption Mapping Version Download 1378 File Size 27.32 MB File Count 1 Create Date May 5, 2017 Last Updated June 2, 2019 Download Description Attached Files Hydromodification Plan (HMP) Exemption Mapping The provided PDF map for HMP exempt areas is from the regional Watershed Management Area Analysis (WMAA). FileActionPDF Excerpt - HMP Exemption Mapping.pdfDownload