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Legend (CHARM/CharmReferenceV1)

Port Lavaca (0)
Area A (1)
Emergency operations center (3)
Fire/EMS station (4)
Law enforcement (5)
Nursing home (6)
National shelter system facility (7)
Mobile home park (8)
Grid (9)
Railroads (11)
Roads (12)
Other Other
County Road County Road
State Route State Route
US Route US Route
Census place (14)
State (15)
County (16)
Census tract (17)
Census block group (18)
2020 Houston, Texas High Res Land Cover v2 (20)
Developed, High Intensity Developed, High Intensity
Developed, Low Intensity Developed, Low Intensity
Developed, Open Space Developed, Open Space
Cultivated Crops Cultivated Crops
Pasture/ Hay Pasture/ Hay
Grassland/Herbaceous Grassland/Herbaceous
Mixed Forest Mixed Forest
Scrub/Shrub Scrub/Shrub
Palustrine Forested Wetland Palustrine Forested Wetland
Palustrine Scrub/Shrub Wetland Palustrine Scrub/Shrub Wetland
Palustrine Emergent Wetland (Persistent) Palustrine Emergent Wetland (Persistent)
Estuarine Forested Wetland Estuarine Forested Wetland
Estuarine Scrub/Shrub Wetland Estuarine Scrub/Shrub Wetland
Estuarine Emergent Wetland ( Estuarine Emergent Wetland (
Unconsolidated Shore Unconsolidated Shore
Barren Land Barren Land
Open Water Open Water
Palustrine Aquatic Bed Palustrine Aquatic Bed
BLE Depth - high (.1%) (22)
Less than 0.5 ft Less than 0.5 ft
.05-1.0 feet .05-1.0 feet
1-3 feet 1-3 feet
3-6 feet 3-6 feet
6-9 feet 6-9 feet
More than 9 feet More than 9 feet
BLE Depth - moderate (.02%) (23)
Less than 0.5 ft Less than 0.5 ft
0.5-1 ft 0.5-1 ft
1-3 ft 1-3 ft
3-6 ft 3-6 ft
6-9 ft 6-9 ft
More than 9 feet More than 9 feet
BLE floodplain - extreme (10%) (24)
Extreme Extreme
BLE floodplain - high (.1%) and moderate (.2%) (25)
High High
Moderate Moderate
Coastal FIRM Zone V VE Combined (27)
AE, RIVERINE FLOODWAY IN COMBINED RIVERINE AND COASTAL ZONE AE, RIVERINE FLOODWAY IN COMBINED RIVERINE AND COASTAL ZONE
VE, RIVERINE FLOODWAY SHOWN IN COASTAL ZONE VE, RIVERINE FLOODWAY SHOWN IN COASTAL ZONE
AE, COASTAL FLOODPLAIN AE, COASTAL FLOODPLAIN
AE, COMBINED RIVERINE AND COASTAL FLOODPLAIN AE, COMBINED RIVERINE AND COASTAL FLOODPLAIN
VE, <Null> VE, <Null>
VE, COASTAL FLOODPLAIN VE, COASTAL FLOODPLAIN
X, 0.2 PCT ANNUAL CHANCE FLOOD HAZARD IN COASTAL ZONE X, 0.2 PCT ANNUAL CHANCE FLOOD HAZARD IN COASTAL ZONE
X, 0.2 PCT ANNUAL CHANCE FLOOD HAZARD IN COMBINED RIVERINE AND COASTAL ZONE X, 0.2 PCT ANNUAL CHANCE FLOOD HAZARD IN COMBINED RIVERINE AND COASTAL ZONE
X, 1 PCT DEPTH LESS THAN 1 FOOT X, 1 PCT DEPTH LESS THAN 1 FOOT
X, AREA WITH REDUCED FLOOD RISK DUE TO LEVEE X, AREA WITH REDUCED FLOOD RISK DUE TO LEVEE
Existing coastal flood risk (29)
Future coastal flood risk (30)
Existing high risk floodplain - 1% ACE - 100 YR (31)
Future high risk floodplain - 1% ACE - 100 YR (32)
Existing moderate risk floodplain - .02% ACE - 500 YR (33)
Future moderate risk floodplain - .02% ACE - 500 YR (34)
CAT1_HurricaneStormSurgeRiskMaps_HighTide (36)
Less than 3 feet inundation above ground Less than 3 feet inundation above ground
3-6 feet inundation depth 3-6 feet inundation depth
6-9 feet inundation depth 6-9 feet inundation depth
9-20 feet inundation depth 9-20 feet inundation depth
20+ feet inundation depth 20+ feet inundation depth
Levee Area - Consult Local Official for Flood Risk information Levee Area - Consult Local Official for Flood Risk information
CAT2_HurricaneStormSurgeRiskMaps_HighTide (37)
Less than 3 feet inundation above ground Less than 3 feet inundation above ground
3-6 feet inundation depth 3-6 feet inundation depth
6-9 feet inundation depth 6-9 feet inundation depth
9-20 feet inundation depth 9-20 feet inundation depth
20+ feet inundation depth 20+ feet inundation depth
Levee Area - Consult Local Official for Flood Risk information Levee Area - Consult Local Official for Flood Risk information
CAT3_HurricaneStormSurgeRiskMaps_HighTide (38)
Less than 3 feet inundation above ground Less than 3 feet inundation above ground
3-6 feet inundation depth 3-6 feet inundation depth
6-9 feet inundation depth 6-9 feet inundation depth
9-20 feet inundation depth 9-20 feet inundation depth
20+ feet inundation depth 20+ feet inundation depth
Levee Area - Consult Local Official for Flood Risk information Levee Area - Consult Local Official for Flood Risk information
CAT4_HurricaneStormSurgeRiskMaps_HighTide (39)
Less than 3 feet inundation above ground Less than 3 feet inundation above ground
3-6 feet inundation depth 3-6 feet inundation depth
6-9 feet inundation depth 6-9 feet inundation depth
9-20 feet inundation depth 9-20 feet inundation depth
20+ feet inundation depth 20+ feet inundation depth
Levee Area - Consult Local Official for Flood Risk information Levee Area - Consult Local Official for Flood Risk information
CAT5_HurricaneStormSurgeRiskMaps_HighTide (40)
Less than 3 feet inundation above ground Less than 3 feet inundation above ground
3-6 feet inundation depth 3-6 feet inundation depth
6-9 feet inundation depth 6-9 feet inundation depth
9-20 feet inundation depth 9-20 feet inundation depth
20+ feet inundation depth 20+ feet inundation depth
Levee Area - Consult Local Official for Flood Risk information Levee Area - Consult Local Official for Flood Risk information
Census Place (42)
High High
Medium Medium
Low Low
Census Tract (43)
High High
Medium Medium
Low Low
County (44)
High High
Medium Medium
Low Low
Census Place (46)
High High
Medium High Medium High
Medium Medium
Medium Low Medium Low
Low Low
Census Tract (47)
High High
Medium High Medium High
Medium Medium
Medium Low Medium Low
Low Low
County (48)
High High
Medium High Medium High
Medium Medium
Medium Low Medium Low
Low Low
PLACE_B1 (50)
High High
Medium Medium
Low Low
PLACE_B2 (51)
High High
Medium Medium
Low Low
PLACE_B3 (52)
High High
Medium Medium
Low Low
<all other values> <all other values>
PLACE_B4 (53)
High High
Medium Medium
Low Low
PLACE_B5 (54)
High High
Medium Medium
Low Low
PLACE_barrier6_employ_housesize (55)
-3.260000 - -0.690000 -3.260000 - -0.690000
-0.689999 - 0.120000 -0.689999 - 0.120000
0.120001 - 1.160000 0.120001 - 1.160000
1.160001 - 3.310000 1.160001 - 3.310000
3.310001 - 12.390000 3.310001 - 12.390000
PLACE_barrier7_depend_access (56)
-3.400000 - -1.190000 -3.400000 - -1.190000
-1.189999 - -0.400000 -1.189999 - -0.400000
-0.399999 - 0.450000 -0.399999 - 0.450000
0.450001 - 1.710000 0.450001 - 1.710000
1.710001 - 5.540000 1.710001 - 5.540000
PLACE_barrier8_race_employ (57)
-2.840000 - -0.580000 -2.840000 - -0.580000
-0.579999 - 0.210000 -0.579999 - 0.210000
0.210001 - 1.650000 0.210001 - 1.650000
1.650001 - 7.960000 1.650001 - 7.960000
7.960001 - 23.190000 7.960001 - 23.190000
Tract - not selected (59)
Tract - selected (60)
Medium Medium
VMAP 2018-2022 SoVI2 Tract (61)
VMAP 2018-2022 SoVI2 County (62)