Services Directory - HAND_Model_Areas_of_Flood

HAND_Model_Areas_of_Flood_Uncertainty (Map Service)

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Current Version: 10.81

Service Description:

Height Above Nearest Drainage (HAND)-based inundation modeling provides an approximation of flood inundation from the nearest water stream and is calculated across HUC6 watershed units. The models in this dataset were derived from historical precipitation and streamflow data to calculate average and maximum discharge events, and modeled additional precipitation amounts to account for potential increases due to climate change.

As described in HAND Model Merged Catchment Areas, a correction scheme was developed to address an existing problem with HAND where flood maps may have artificial barriers. This correction scheme is experimental, and some areas were corrected in some of the lower precipitation scenarios but not in the higher precipitation scenarios, resulting in some flooding “disappearing” in higher precipitation scenarios. For consistency, we added the missing flooding areas back into the higher precipitation scenarios using the depth and extent data from the lower precipitation scenarios, but we note that the depth and extent of flooding in these areas do not increase for the scenarios in which they were missing. This layer identifies the areas where the actual flooding depth and extent is uncertain.

Map Name: HAND Model Areas of Flood Uncertainty

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Layers:

HAND Model Uncertainty(0)

Tables:

Description:

Copyright Text: Rutgers University: Wang Hydro-environment Informatics Research Lab, NJAES Office of Research Analytics, Voorhees Transportation Center

Spatial Reference:
102100

Single Fused Map Cache: true

Capabilities: Map,TilesOnly,Tilemap

Tile Info:

Height: 256
Width: 256
DPI: 96
Levels of Detail: (# Levels: 24)

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Format: Mixed
Compression Quality: 75
Origin:
Spatial Reference:
102100

Initial Extent:

Full Extent:

Min Scale: 2311162.0
Max Scale: 1734.0

Min LOD: 8
Max LOD: 17

Units: esriMeters

Supported Image Format Types: Mixed

Export Tiles Allowed: false
Max Export Tiles Count: 100000

Document Info:

Title: HAND Model Areas of Flood Uncertainty
Author: ljmarxen_rutgers
Comments:
Subject: Height Above Nearest Drainage (HAND)-based inundation modeling provides an approximation of flood inundation from the nearest water stream and is calculated across HUC6 watershed units. The models in this dataset were derived from historical precipitation and streamflow data to calculate average and maximum discharge events, and modeled additional precipitation amounts to account for potential increases due to climate change.
Category:
Keywords: NJADAPT, HAND, inland, riverine, flooding, gis, mapping, NJ, stream, river, rainfall, storm, inundation, uncertainty