Services Directory - Extreme_Stormwater

Extreme_Stormwater_Flood (Map Service)

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Current Version: 10.81

Service Description:

Map Name: Extreme Stormwater Flood

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Layers:

Extreme Stormwater Flood(0)

Tables:

Description:

Copyright Text:

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: PNG32
Compression Quality: 0
Origin:
Spatial Reference:
102100

Initial Extent:

Full Extent:

Min Scale: 577791.0
Max Scale: 0.0

Min LOD: 10
Max LOD: 16

Units: esriMeters

Supported Image Format Types: PNG32

Export Tiles Allowed: false
Max Export Tiles Count: 100000

Document Info:

Title: Extreme Stormwater Flood
Author: nycem_adminpub
Comments:
Subject: Three (3) flooding categories: The "1-Nuisance Flooding" (ponding depths greater or equal to 4 in. and less than 1 ft.) and "2-Deep and Contiguous Flooding" (ponding depths 1 ft. and greater) categories were created using hydrologic and hydraulic computer models and represent flood risk due to extreme rainfall. The third category, "3-Future High Tides 2080", shows coastal tidal inundation based on the NYC Panel on Climate Change 90th percentile estimates for the 2080's and is sourced from the NYC Flood Hazard Mapper. Please refer to the New York City Stormwater Resiliency Plan for more information on the purpose of the study, how datasets were developed, applications for this data, and other details. A coded value domain is used for the "Flooding_Category" field. See Column Info tab of the Data Dictionary for definition of each code. This scenario shows significant flooding impacts of an extreme rainstorm combined with future sea level rise. The map highlights the considerable land areas that are predicted to flood and is useful for evaluating neighborhood-wide strategies to manage flood risk. This scenario reflects approximately 3.5 inches of rain falling in one hour (also referred to as the 100-year storm, with approximately 1 percent chance of occurrence in any given year) combined with 4.8 feet of SLR (NPCC 90th percentile estimate for the 2080s) (Table 2). Flooding in this scenario is the result of the compounded effects of both rainfall and the impacts of potential blocked storm drains and outfalls from sea level rise.
Category:
Keywords: Extreme, Stormwater