GRANIT Metadata for Land Conservation Plan - 2016 Update: Flood Storage and Risk Mitigation Focus Areas

Title: Land Conservation Plan - 2016 Update: Flood Storage and Risk Mitigation Focus Areas from the 2016 Update to the Land Conservation Plan for New Hampshire's Coastal Watersheds

Time Period of Content: 5/31/2016 Publication Date: 7/15/2016

Originator: The Nature Conservancy

Abstract:
Flood storage and risk mitigation conservation focus areas as delineated for the 2016 update to the Land Conservation Plan for New Hampshire's Coastal Watersheds, which focused on protecting coastal water resources. These priority areas estimate low elevation, flat riparian land (i.e. low flats) with the greatest flood storage capacity from a whole-watershed perspective. They also include Sea Level Affecting Marsh Migration (SLAMM) conservation priorities.

A tiered prioritization was developed for flood storage and risk mitigation focus areas. Tier 1 areas include the top 30 percent (by area) of flood storage capacity lands across the coastal watershed that are upstream of valuable infrastructure (e.g. densely developed areas, major transportation systems). Tier 1 areas also include SLAMM conservation priorities with salt marsh potential of up to 2 meters of sea level rise by year 2100. Tier 2 includes the top scoring flood storage areas in each HUC12 watershed that does not already include a tier 1 focus area, in addition to areas meeting the top 30 percent threshold used for tier 1 but that are not upstream of valuable infrastructure.

The flood capacity analysis is limited to the extent of LiDAR coverage, so excludes the northwestern portion of the watershed. SLAMM results are limited to the New Hampshire portion of the watershed.

A comprehensive description of the flood storage and risk mitigation delineation process is available in the project's technical report.
Theme Keywords: LCP, coastal watershed, conservation plan, flood, flood storage, flood risk, attenuation, infrastructure, mitigation, conservation, focus areas, land protection, buffer, water resource, water quality, ecosystem service

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Title: Land Conservation Plan - 2016 Update: Flood Storage and Risk Mitigation Focus Areas from the 2016 Update to the Land Conservation Plan for New Hampshire's Coastal Watersheds
Time Period of Content: 5/31/2016	Publication Date: 7/15/2016
Originator: The Nature Conservancy
Abstract: Flood storage and risk mitigation conservation focus areas as delineated for the 2016 update to the Land Conservation Plan for New Hampshire's Coastal Watersheds, which focused on protecting coastal water resources. These priority areas estimate low elevation, flat riparian land (i.e. low flats) with the greatest flood storage capacity from a whole-watershed perspective. They also include Sea Level Affecting Marsh Migration (SLAMM) conservation priorities. A tiered prioritization was developed for flood storage and risk mitigation focus areas. Tier 1 areas include the top 30 percent (by area) of flood storage capacity lands across the coastal watershed that are upstream of valuable infrastructure (e.g. densely developed areas, major transportation systems). Tier 1 areas also include SLAMM conservation priorities with salt marsh potential of up to 2 meters of sea level rise by year 2100. Tier 2 includes the top scoring flood storage areas in each HUC12 watershed that does not already include a tier 1 focus area, in addition to areas meeting the top 30 percent threshold used for tier 1 but that are not upstream of valuable infrastructure. The flood capacity analysis is limited to the extent of LiDAR coverage, so excludes the northwestern portion of the watershed. SLAMM results are limited to the New Hampshire portion of the watershed. A comprehensive description of the flood storage and risk mitigation delineation process is available in the project's technical report.
Theme Keywords: LCP, coastal watershed, conservation plan, flood, flood storage, flood risk, attenuation, infrastructure, mitigation, conservation, focus areas, land protection, buffer, water resource, water quality, ecosystem service
Full Metadata and Data Download