Name: Marsh Health

Display Field: elev_uvvr

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: Marsh health sub-layer within the Marsh Resilience Portfolio, maximum 15 points. USGS’ Marsh Lifespan Dataset was first used to determine a ‘marsh management suggestion’ for a marsh unit. This dataset combines vegetated elevation with the Unvegetated to Vegetated Ratio (UVVR) to classify marshes as restore, protect, monitor and evaluate. For each CMU, an ELEVATION_UVVR field was calculated according to the thresholds on the chart below (elevation high >0.4m, elevation low <= 0.4m, UVVR low <= 0.15, UVVR High > 0.15). Each CMU was then scored according to its management suggestion as follows: Protect (high_low) = 15 points, monitor (low_high) = 10 points, restore (high_high) = 5 points, evaluate (low_high) = 0 points. This scoring field is labeled health_score in the MPI attribute table. You can also view the restoration suggestion of each CMU by viewing the management_strategy field within the MPI attribute table.Last updated: 03/30/2026

Copyright Text: MD iMAP, DNR, USGS

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Fields:

• OBJECTID ( type: esriFieldTypeOID, alias: OBJECTID )
• Shape ( type: esriFieldTypeGeometry, alias: Shape )
• health_score ( type: esriFieldTypeDouble, alias: Health Score )
• elev_uvvr ( type: esriFieldTypeString, alias: Elevation UVVR Combo, length: 20 )
• management_strategy ( type: esriFieldTypeString, alias: Management Strategy, length: 30 )
• MPI_Score ( type: esriFieldTypeDouble, alias: MPI Score )
• FID_CMU2 ( type: esriFieldTypeInteger, alias: Conceptual Marsh Unit )
• Area_acres ( type: esriFieldTypeDouble, alias: Area Acres )
• region ( type: esriFieldTypeString, alias: CMU Unit , length: 254 )
• ATOT_M2 ( type: esriFieldTypeDouble, alias: ATOT_M2 )
• AVEG_M2 ( type: esriFieldTypeDouble, alias: AVEG_M2 )
• MU_ELEV ( type: esriFieldTypeDouble, alias: MU_ELEV )
• MU_ELEVMTL ( type: esriFieldTypeDouble, alias: MU_ELEVMTL )
• VG_ELEV ( type: esriFieldTypeDouble, alias: VG_ELEV )
• VG_ELEVMTL ( type: esriFieldTypeDouble, alias: VG_ELEVMTL )
• UVVR ( type: esriFieldTypeDouble, alias: UVVR )
• BGRND ( type: esriFieldTypeDouble, alias: BGRND )
• GMSL03 ( type: esriFieldTypeDouble, alias: GMSL03 )
• GMSL05 ( type: esriFieldTypeDouble, alias: GMSL05 )
• GMSL10 ( type: esriFieldTypeDouble, alias: GMSL10 )
• FLG ( type: esriFieldTypeInteger, alias: FLG )
• FID_CMU ( type: esriFieldTypeInteger, alias: FID_CMU )
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