20100624
09442100
FALSE
20260826
09414900
20260826
09414900
{A2D15982-0FB2-4E7B-AE8C-8EDE14A1A21E}
S_FLD_HAZ_AR1
253997.455700
293875.882300
4896857.491600
4946556.430600
1
0.000
002
Projected
GCS_WGS_1984
WGS_1984_Web_Mercator_Auxiliary_Sphere
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Linear Unit: Meter (1.000000)
1.0
FEMA Map Service Center
Federal Emergency Management Agency
1-800-358-9616
500 C Street S.W.
Washington D.C.
DC
20472
US
www.fema.gov/msc
20150327
ArcGIS Metadata
1.0
Suzanne Jiwani
DNR - Waters
Hydrologist
651-259-5681
651-296-0445
500 Lafayette Road - Box 32
St Paul
MN
55155
US
suzanne.jiwani@state.mn.us
CD
Shapefile
0.000
S_FLD_HAZ_AR
FEMA Map Service Center, Federal Emergency Management Agency
vector digital data
various layers clipped to counties - The Digital Flood Insurance Rate Map (DFIRM) Database depicts flood risk information and supporting data used to develop the risk data. The primary risk classifications used are the 1-percent-annual-chance flood event, the 0.2-percent-annual-chance flood event, and areas of minimal flood risk. The DFIRM Database is derived from Flood Insurance Studies (FISs), previously published Flood Insurance Rate Maps (FIRMs), flood hazard analyses performed in support of the FISs and FIRMs, and new mapping data, where available. The FISs and FIRMs are published by the Federal Emergency Management Agency (FEMA). The file is georeferenced to earth's surface using the UTM projection and coordinate system.The specifications for the horizontal control of DFIRM data files are consistent with those required for mapping at a scale of 1:12,000.
The FIRM is the basis for floodplain management, mitigation, and insurance activities for the National Flood Insurance Program (NFIP). Insurance applications include enforcement of the mandatory purchase requirement of the Flood Disaster Protection Act, which "... requires the purchase of flood insurance by property owners who are being assisted by Federal programs or by Federally supervised, regulated or insured agencies or institutions in the acquisition or improvement of land facilities located or to be located in identified areas having special flood hazards," Section 2 (b) (4) of the Flood Disaster Protection Act of 1973. In addition to the identification of Special Flood Hazard Areas (SFHAs), the risk zones shown on the FIRMs are the basis for the establishment of premium rates for flood coverage offered through the NFIP. The DFIRM Database presents the flood risk information depicted on the FIRM in a digital format suitable for use in electronic mapping applications. The DFIRM database is a subset of the Digital FIS database that serves to archive the information collected during the FIS. The S_Fld_Haz_Ar table contains information about the flood hazards within the study area. A spatial file with locational information also corresponds with this data table. These zones are used by the federal Emergency Management Agency (FEMA) to designate the Special Flood Hazard Area (SFHA) and for insurance rating purposes. These data are the flood hazard areas that are or will be depicted on the Flood Insurance Rate Map (FIRM). A spatial file with locational information also corresponds with this data table. The spatial elements representing the flood zones are polygons. The entire area of the jurisdiction(s) mapped by the FIRM should have a corresponding flood zone polygon. There is one polygon for each contiguous flood zone designated. This is a modified Standard DFIRM Database table that includes Standard DFIRM Database items and Enhanced Database items. All items after SOURCE_CIT are Enhanced.
Federal Emergency Management Agency
Suzanne Jiwani
DNR - Waters
Hydrologist
651-259-5681
651-296-0445
500 Lafayette Road - Box 32
St Paul
MN
55155
US
suzanne.jiwani@state.mn.us
NFIP
Special Flood Hazard Area
FEMA Flood Hazard Zone
Floodway
Digital Flood Insurance Rate Map
Base Flood Elevation
Flood Insurance Rate Map
SFHA
inlandWaters
DFIRM
Riverine
FIRM
DFIRM Database
Coastal
NFIP
Special Flood Hazard Area
FEMA Flood Hazard Zone
Floodway
Digital Flood Insurance Rate Map
Base Flood Elevation
Flood Insurance Rate Map
SFHA
inlandWaters
DFIRM
Riverine
FIRM
DFIRM Database
Coastal
See access and use constraints information.
The hardcopy FIRM and DFIRM and the accompanying FISs are the official designation of SFHAs and Base Flood Elevations (BFEs) for the NFIP. For the purposes of the NFIP, changes to the flood risk information published by FEMA may only be performed by FEMA and through the mechanisms established in the NFIP regulations (44 CFR Parts 59-78). These digital data are produced in conjunction with the hardcopy FIRMs and generally matches the hardcopy map exactly. However the hardcopy flood maps and flood profiles are the authoritative documents for the NFIP. Acknowledgement of FEMA would be appreciated in products derived from these data.
Esri ArcGIS 10.2.2.3552
-96.10135
-95.579429
44.183465
44.642789
1
-96.101350
-95.579429
44.642789
44.183465
The hardcopy FIRM and DFIRM and the accompanying FISs are the official designation of SFHAs and Base Flood Elevations (BFEs) for the NFIP. For the purposes of the NFIP, changes to the flood risk information published by FEMA may only be performed by FEMA and through the mechanisms established in the NFIP regulations (44 CFR Parts 59-78). These digital data are produced in conjunction with the hardcopy FIRMs and generally match thehardcopy map exactly. However the hardcopy flood maps and flood profiles are the authoritativedocuments for the NFIP. Acknowledgement of FEMA would be appreciated in products derived from these data.
0
S_FLD_HAZ_AR
Feature Class
0
DEP_REVERT
If Zone is Zone AR, this field would hold that flood depth for the reverted zone. This field is populated when Zone equals AR and the reverted zone has a depth assigned.
FEMA
DEP_REVERT
Double
13
12
2
SOURCE_CIT
Source Citation. Abbreviation used in the metadata file when describing the source information for the S_Fld_Haz_Ar table. Normally, the flood hazard area polygon will be divided to distinguish areas modified by the most recent revision from areas based on the effective FIRM prior to the most recent revision. Revisions and sources prior to the most recent revision will not be tracked for individual polygons in the flood hazard areas table in the standard database.
FEMA
SOURCE_CIT
String
11
0
0
BFE_REVERT
If Zone is Zone AR, this field would hold the static base flood elevation for the reverted zone. This field is populated when Zone equals AR and the reverted zone has a static BFE.
FEMA
BFE_REVERT
Double
13
12
2
VEL_UNIT
Unit of Measurement for the Velocity Attribute. This is shown in the legend where alluvial fans are present. This field is only populated if the VELOCITY field is populated. Acceptable values for this field are listed in the D_Velocity_Units table.
FEMA
VEL_UNIT
String
20
0
0
FID
Internal feature number.
ESRI
Sequential unique whole numbers that are automatically generated.
FID
OID
4
0
0
DEPTH
Depth Value for Zone AO Areas. This is shown beneath the zone label on the FIRM. This field is only populated if a depth is shown on the FIRM.
FEMA
DEPTH
Double
13
12
2
STATIC_BFE
Static Base Flood Elevation. For areas of constant Base Flood Elevation (BFE), the BFE value is shown beneath the zone label rather than on a BFE line. In this situation the same BFE applies to the entire polygon. This is normally occurs in lakes or coastal zones. This field is only populated where a static BFE is shown on the FIRM.
FEMA
STATIC_BFE
Double
13
12
2
SFHA_TF
Special Flood Hazard Area. If the area is within SFHA this field would be True. This field will be true for any area that is coded for any A or V zone flood areas. It should be false for any X or D zone flood areas. Enter “T” for true or “F” for false.
FEMA
SFHA_TF
String
1
0
0
FLOODWAY
Floodway Type. Floodway areas are designated by FEMA and adopted by communities to provide an area that will remain free of development to moderate increases in flood heights due to encroachment on the floodplain. Normal floodway areas are ‘floodway’. Special cases will have a note on the hardcopy FIRM. If the corresponding area is not designated as a floodway, this field is null. Acceptable values for this field are listed in the D_Floodway table.
FEMA
FLOODWAY
String
30
0
0
FLD_AR_ID
Primary key for table lookup. Assigned by table creator.
FEMA
FLD_AR_ID
String
11
0
0
FLD_ZONE
Flood Zone. This is a flood zone designation. These zones are used by FEMA to designate the SFHAs and for insurance rating purposes. NOTE: The symbol ‘%’ is a reserved symbol in most software packages so the word ‘percent’ was abbreviated to ‘PCT’. Acceptable values for this field are listed in the D_Zone table.
FEMA
FLD_ZONE
String
55
0
0
Shape
Feature geometry.
ESRI
Coordinates defining the features.
Shape
Geometry
0
0
0
AR_REVERT
If the area is Zone AR, this field would hold the zone that the area would revert to if the AR zone were removed. This field is only populated if the corresponding area is Zone AR. Acceptable values for this field are listed in the D_Zone table.
FEMA
AR_REVERT
String
6
0
0
VELOCITY
Velocity Measurement. This is shown beneath the zone label on the FIRM for alluvial fan areas (certain Zone AO areas). This value represents the velocity of the flood flow in this area. This field is only populated when a velocity is shown on the FIRM.
FEMA
VELOCITY
Double
13
12
2
LEN_UNIT
Length Units. This unit indicates the measurement system used for the BFEs and/or depths. Normally this would be feet. This field is only populated if the STATIC_BFE or DEPTH field is populated. Acceptable values for this field are listed in the D_Length_Units table.
FEMA
LEN_UNIT
String
20
0
0
V_DATUM
Vertical Datum. The vertical datum indicates the reference surface from which the flood elevations are measured. Normally this would be North American Vertical Datum of 1988 for new studies. This field is only populated if the STATIC_BFE field is populated. Acceptable values for this field are listed in the D_V_Datum table.
FEMA
V_DATUM
String
6
0
0
The DFIRM Database is made up of several data themes containing both spatial and attribute information. These data together represent the current flood risk for the subject area as identified by FEMA. The attribute tables include SFHA locations, flood zone designations, BFEs, political entities, cross-section locations, FIRM panel information, and other data related to the NFIP.
Appendix L of FEMA's Guidelines and Specifications for FEMA Flood Hazard Mapping Partners contains a detailed description of each attribute code and a reference to other relevant information. The following tables are included in this data set: l_comm_info l_stn_start study_info s_bfe s_base_index s_firm_pan s_fld_haz_ar s_fld_haz_ln s_gen_struct s_label_ld s_perm_bmk s_pol_ar s_pol_ln s_quad_index s_riv_mrk s_trnsport_ln s_wtr_ln s_xs s_label_pt
dataset
EPSG
6.18.3(9.3.1.2)
Simple
FALSE
0
FALSE
FALSE