CITY OF NEW YORK, NEW YORK - Welcome to NYC.gov
VOLUME 1 OF 1
City of New York
CITY OF NEW YORK, NEW YORK
COMMUNITY NAME BRONX COUNTY KINGS COUNTY NEW YORK COUNTY QUEENS COUNTY RICHMOND COUNTY
COMMUNITY NUMBER
Preliminary:
DECEMEBER 5, 2013
FLOOD INSURANCE STUDY NUMBER 360497V000B
Version Number 1.0.0.0
NOTICE TO FLOOD INSURANCE STUDY USERS
Communities participating in the National Flood Insurance Program have established repositories of flood hazard data for floodplain management and flood insurance purposes. This Flood Insurance Study (FIS) may not contain all data available within the repository. It is advisable to contact the community repository for any additional data.
Part or all of this FIS may be revised and republished at any time. In addition, part of this FIS may be revised by the Letter of Map Revision process, which does not involve republication or redistribution of the FIS. It is, therefore, the responsibility of the user to consult with community officials and to check the community repository to obtain the most current FIS components.
Initial FIS Effective Date: May 16, 1983 (FIS report); November 16, 1983 (Flood Insurance Rate Map)
Revised FIS Dates: February 15, 1991- To change zone designations and to add special flood hazard areas.
May 18, 1992- To add otherwise protected areas.
July 5, 1994- To add base flood elevations, to add special flood hazard areas and to change special flood hazard areas.
May 21, 2001- To reflect updated topographic information, to update map format and to change special flood hazard areas.
September 5, 2007- To reflect updated topographic information, to update map format and to change special flood hazard areas
TABLE OF CONTENTS
Page
1.0 INTRODUCTION
1
1.1 Purpose of Study
1
1.2 Authority and Acknowledgments
1
1.3 Coordination
2
2.0 AREA STUDIED
3
2.1 Scope of Study
3
2.2 Community Description
5
2.3 Principal Flood Problems
8
2.4 Flood Protection Measures
11
3.0 ENGINEERING METHODS
13
3.1 Riverine Hydrologic Analyses
13
3.2 Riverine Hydraulic Analyses
18
3.3 Coastal Analyses
20
3.4 Wave Height Analyses
22
3.5 Vertical Datum
57
4.0 FLOODPLAIN MANAGEMENT APPLICATIONS
57
4.1 Floodplain Boundaries
58
4.2 Floodways
58
5.0 INSURANCE APPLICATIONS
71
6.0 FLOOD INSURANCE RATE MAP
72
7.0 OTHER STUDIES
72
8.0 LOCATION OF DATA
73
9.0 BIBLIOGRAPHY AND REFERENCES
73
TABLE OF CONTENTS - continued Page
FIGURES Figure 1-1: Bronx published and mapping transect location map ................................................ 24 Figure 1-2: New York County published and mapping transect map .......................................... 25 Figure 1-3: Richmond County published and mapping transect map........................................... 26 Figure 1-4: Kings County published and mapping transect map.................................................. 27 Figure 1-5: Queens County published and mapping transect map ............................................... 28 Figure 2: Transect Schematic........................................................................................................ 31 Figure 3: Floodway Schematic ..................................................................................................... 70
TABLES
Table 1 ? Detailed Flooding Sources.............................................................................................. 4
Table 2 ? Population And Land Area Of New York City .............................................................. 6
Table 3 ? Summary Of Discharges................................................................................................ 14
Table 4 ? Summary Of Stillwater Elevations ............................................................................... 17
Table 5 ? Transect Data ................................................................................................................ 32
Table 6 ? Floodway Data ...............................................................................................................60
Exhibit 1 - Flood Profiles Arbutus Creek Blue Heron Main Branch Blue Heron Tributary Bronx River Butler Manor Colon Tributary D Street Brook Denise Tributary Eltingville Tributary Forest Hill Road Brook Jansen Tributary Lemon Creek Mill Creek Mill Creek Tributary 1 Mill Creek Tributary 2 Mill Creek Tributary 3 Richmond Creek Sandy Brook
EXHIBITS
Panels 01P-02P Panels 03P-04P Panel 05P Panels 06P-09P Panel 10P Panels 11P-12P Panels 13P-14P Panel 15P Panel 16P Panels 17P-19P Panel 20P Panels 21P-24P Panels 25P-26P Panel 27P Panel 28P Panel 29P Panels 30P-38P Panels 39P-41P
ii
EXHIBITS ? continued
Exhibit 1 - Flood Profiles (continued) Sweet Brook Wolfe's Pond
Panels 42P-45P Panel 46P
Exhibit 2 - Flood Insurance Rate Map Index Flood Insurance Rate Map
iii
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