Does Harrisburg flood?
Harrisburg, Houston, TX · ZIP codes 77017, 77012 and 77087: the ZIP codes on most of the flood insurance claims counted here. ZIP codes do not follow neighborhood lines.
Yes. Insured properties in and around Harrisburg have filed flood claims. About 12% of Harrisburg’s mapped area is inside FEMA’s Special Flood Hazard Area; the rest is in moderate or minimal-hazard Zone X. NFIP flood insurance records list 253 claims from the Census block groups that cover Harrisburg, from 1978 through 2024. 153 of them received a payment, totaling $6,220,956 (not adjusted for inflation). The busiest years were 2008 (51 claims), 2017 (44 claims), 2001 (29 claims).
What this page counts as Harrisburg
We could not find an openly licensed official boundary for Harrisburg, so this page uses a census-based area. For this page, Harrisburg means the 2010 Census block groups whose center lies within 2.4 km (1.5 miles) of the U.S. Geological Survey (GNIS) map point for Harrisburg (feature 1337404), each block group going to the nearest of the places we cover. Every number below is for exactly those block groups (listed in “How these numbers were made”), so the edges are approximate and may include or leave out a few blocks people would call Harrisburg. Sources: U.S. Census Bureau TIGERweb, 2010 Census Block Groups and U.S. Geological Survey, Geographic Names Information System (GNIS) domestic names.
Past claims do not predict future flooding, and a neighborhood figure cannot tell you about one building. Look up the exact address on the FEMA Flood Map Service Center and get flood insurance quotes before you sign a lease or a contract.
Check a specific address in Harrisburg
Neighborhood figures are averages. Our address check looks up the FEMA flood zone at one address, from the same public maps: check if your address is in a flood zone.
Flood zones street by street in Harrisburg
The named streets in Harrisburg, longest first, with how much of each street’s length inside Harrisburg lies in FEMA’s high-risk flood zones (the Special Flood Hazard Area, zones A and V). Length is the part inside Harrisburg; the main zone is the FEMA zone covering most of that length. A street can cross several zones, so the zone at one address can differ from the street’s main zone: check the address above for that. 103 shorter streets are not listed.
| Street | Length | In high-risk zones | Main zone |
|---|---|---|---|
| I-610 | 4.2 mi | 6.6% | X (unshaded, minimal) (78%) |
| State Hwy 225 | 3.2 mi | 30% | X (unshaded, minimal) (51%) |
| Broadway St | 2.3 mi | 14% | X (unshaded, minimal) (81%) |
| I-45 | 2.1 mi | 22% | X (unshaded, minimal) (72%) |
| Lawndale St | 1.8 mi | 0.0% | X (unshaded, minimal) (100%) |
| Fennell St | 1.6 mi | 7.7% | X (unshaded, minimal) (83%) |
| Evergreen Dr | 1.6 mi | 1.3% | X (unshaded, minimal) (98%) |
| Keller St | 1.4 mi | 0.0% | X (unshaded, minimal) (100%) |
| Narcissus St | 1.3 mi | 0.0% | X (unshaded, minimal) (100%) |
| Manchester St | 1.3 mi | 0.0% | X (unshaded, minimal) (100%) |
| Berkley St | 1.3 mi | 0.9% | X (unshaded, minimal) (99%) |
| Galveston Rd | 1.3 mi | 4.6% | X (unshaded, minimal) (75%) |
| Kernel St | 1.2 mi | 0.0% | X (unshaded, minimal) (100%) |
| Linden St | 1.2 mi | 0.0% | X (unshaded, minimal) (100%) |
| Moss Rose St | 1.1 mi | 0.0% | X (unshaded, minimal) (100%) |
| Myrtle St | 1.1 mi | 0.0% | X (unshaded, minimal) (100%) |
| Hemlock St | 1.0 mi | 0.0% | X (unshaded, minimal) (100%) |
| Coral St | 1.0 mi | 0.0% | X (unshaded, minimal) (94%) |
| S 75th St | 5,040 ft | 11% | X (unshaded, minimal) (86%) |
| Japonica St | 5,040 ft | 0.0% | X (unshaded, minimal) (100%) |
| Ilex St | 5,000 ft | 0.0% | X (unshaded, minimal) (100%) |
| Kellogg St | 4,530 ft | 0.0% | X (unshaded, minimal) (100%) |
| Medina St | 3,990 ft | 28% | X (unshaded, minimal) (69%) |
| Office City Dr | 3,960 ft | 0.0% | X (unshaded, minimal) (100%) |
| E Erath St | 3,820 ft | 2.1% | X (unshaded, minimal) (96%) |
Streets: U.S. Census Bureau TIGERweb, Transportation (primary, secondary and local roads). Flood zones: FEMA National Flood Hazard Layer (NFHL), Flood Hazard Zones and FIRM Panels, retrieved October 24, 2026. Each street is clipped to the area boundary and measured in an equal-area projection. Street lengths are rounded.
Flood zones in Harrisburg
Share of Harrisburg’s mapped area (about 10.122 km²) in each FEMA flood zone, from FEMA National Flood Hazard Layer (NFHL), Flood Hazard Zones and FIRM Panels.
| FEMA zone | Share of area |
|---|---|
| X (unshaded, minimal) | 83% |
| AE | 12% |
| X (shaded, 0.2% annual chance) | 5.0% |
| A | 0.0% |
What the zones mean
- Zone AE (and A, AH, AO)
- High-risk: part of the Special Flood Hazard Area (SFHA), the area FEMA maps as having a 1-percent chance of flooding in any given year (the “100-year” or base flood). AE areas have a mapped base flood elevation.
- Zone VE (and V)
- High-risk coastal areas, also in the SFHA, where the base flood is expected to bring additional hazards from storm waves.
- Zone X (shaded)
- Moderate hazard: between the limits of the 1-percent and the 0.2-percent-annual-chance (“500-year”) flood.
- Zone X (unshaded)
- Minimal hazard: outside the SFHA and higher than the 0.2-percent-annual-chance flood elevation. Minimal is not zero: flood claims are filed from X zones too.
Source: FEMA Glossary: Flood Zones.
Flood insurance claims over time
Claims filed under the National Flood Insurance Program (NFIP) from the 2010 Census block groups that cover Harrisburg. This area is made of whole block groups, so every claim counted here comes from inside it. Only insured properties appear, so these counts understate total flooding.
By decade
| Decade | Claims | Paid |
|---|---|---|
| 1970s | 25 | $192,110 |
| 1980s | 27 | $246,814 |
| 1990s | 12 | $100,893 |
| 2000s | 115 | $2,061,640 |
| 2010s | 67 | $3,399,273 |
| 2020s | 7 | $220,227 |
By year of loss
Named flood events with the most claims
- Hurricane Ike: 50 claims
- Hurricane Harvey: 42 claims
- Tropical Storm Allison: 39 claims
- Flooding: 28 claims
- Tropical Storm Claudette: 10 claims
FEMA labels some events only as “Flooding”. Claims by the flood zone the property was rated in:
- X/B/C (moderate or minimal): 118
- A/AE/AH/AO (high risk): 112
- Not reported: 23
How much is flood insurance in Harrisburg?
The typical National Flood Insurance Program policy on single-family homes in Harrisburg costs $1,069 a year: the median of 51 policies that started between August 1, 2025 and July 31, 2026. Half of them cost between $907 and $1,187. That is the full amount paid for the year, the premium plus FEMA’s fees and surcharges, and every one of these policies is priced under Risk Rating 2.0. A quote for one building can be far from this: its elevation, foundation, age, coverage and deductible all change the price. Private flood insurance is not included.
Source: FEMA OpenFEMA Dataset: FIMA NFIP Redacted Policies - v3, computed October 24, 2026.
Are insurers dropping homes in Harrisburg?
Since April 2026, Texas insurers must report every home insurance policy they cancel or do not renew, and every application they turn down, with the reasons. In ZIP code 77017, insurers did not renew or cancelled for reasons of their own at least 117 homeowner-type policies in April–July 2026: 29.2 for every 1,000 policies in force, above the Texas rate of 14.2. ZIP codes do not follow neighborhood lines; these are the ZIP codes on most of the flood claims counted for Harrisburg, within 10 km of it.
| ZIP code | Not renewed or cancelled by the insurer | Per 1,000 policies in force | Applications turned down |
|---|---|---|---|
| 77017 | 117 | 29.2 | 286 |
| 77012 | 32 | 21.5 | 87 |
| 77087 | 91 | 20.3 | 402 |
| All of Texas | 113,811 | 14.2 | 575,534 |
Homeowner-type policies: homeowners, condominium owners, dwelling (rental house) and mobile home policies, April–July 2026. “Not renewed or cancelled by the insurer” is every nonrenewal plus every cancellation whose stated reasons include one on the insurer’s side; cancellations for nonpayment or at the policyholder’s own request are not counted, and they are most cancellations. The reasons file only has notices sent since the reporting began, so the cancellation part is a floor: read these as “at least”. Policies in force are TDI’s count as of December 31, 2025. A rate is shown only for 10 or more. Where the insurer’s notice gave its reasons (225 notices in TDI’s reasons file for these ZIP codes): 81% cited “other insurer action”, TDI’s catch-all reason; 6% cited other property condition; 4% cited an increase in hazard; 2% cited the roof’s condition; 2 cited the insurer leaving the market; 1 cited the property’s location. A notice can give more than one reason.
Source: Texas Department of Insurance, HB 2067 residential property data: actual number of declinations, cancellations and nonrenewals (data.texas.gov); Texas Department of Insurance, HB 2067 residential property data: reasons for declinations, cancellations and nonrenewals (data.texas.gov); Texas Department of Insurance, HB 2067 residential property data: policy counts (data.texas.gov). Computed October 26, 2026. The Texas Department of Insurance does not endorse this site.
Why home insurance costs what it does in Harrisburg
This section is educational and is not insurance advice.
Flood insurance
ZIP codes do not follow neighborhood lines. These are the ZIP codes on at least 5% of the flood claims counted for Harrisburg, within 10 km of it.
- ZIP code 77017: the median National Flood Insurance Program policy cost for single-family homes was $1,082 a year, the middle of 374 policies that started between August 1, 2025 and July 31, 2026. Half of them cost between $961 and $1,251. These policies are priced under Risk Rating 2.0.
- ZIP code 77017: NFIP records list 510 flood claims with a loss year from 1978 through 2025. The claims dataset is as of September 8, 2026.
- ZIP code 77012: the median National Flood Insurance Program policy cost for single-family homes was $1,080 a year, the middle of 68 policies that started between August 1, 2025 and July 31, 2026. Half of them cost between $931 and $1,271. These policies are priced under Risk Rating 2.0.
- ZIP code 77012: NFIP records list 166 flood claims with a loss year from 1979 through 2025. The claims dataset is as of September 8, 2026.
- ZIP code 77087: the median National Flood Insurance Program policy cost for single-family homes was $874 a year, the middle of 566 policies that started between August 1, 2025 and July 31, 2026. Half of them cost between $682 and $1,081. These policies are priced under Risk Rating 2.0.
- ZIP code 77087: NFIP records list 1,099 flood claims with a loss year from 1978 through 2025. The claims dataset is as of September 8, 2026.
Fire and wind
- FEMA's National Risk Index, version 1.20.0 (December 2025) rates hurricane risk for the census tracts covering Harrisburg as Relatively Moderate for 85.4% and Relatively High for 14.6% of the area.
- USDA Forest Service Wildfire Risk to Communities gives Houston, TX a Risk to Homes national percentile rank of 0.634, which its methods call Medium (above the 40th percentile and below the 70th). That is the city rating, not a rating of Harrisburg alone. The summary file is dated April 15, 2026.
The insurance market in Texas
- Texas Windstorm Insurance Association: Total policies in force, as of 6/30/2026: 288,676.
- Texas FAIR Plan Association: As of June 30, 2026: TFPA insures 118,486 properties.
What to ask your agent
- Ask the agent how old the roof is.
- Ask whether a wind-mitigation discount is available for this house.
- Ask how flood coverage differs from the homeowners policy. A standard homeowners policy does not cover flood. Flood coverage is a separate policy.
- Ask whether the policy has a separate hurricane or windstorm deductible, and how that deductible is calculated.
- Ask when coverage would start. A new National Flood Insurance Program policy generally takes effect 30 days after purchase.
Flood coverage and the 30-day wait: FEMA fact sheet, Jan. 21, 2025; 44 CFR 61.11.
What do NFIP records show for flood insurance in Harrisburg?
ZIP code 77017: the median National Flood Insurance Program policy cost for single-family homes was $1,082 a year, the middle of 374 policies that started between August 1, 2025 and July 31, 2026. Half of them cost between $961 and $1,251. These policies are priced under Risk Rating 2.0. ZIP code 77017: NFIP records list 510 flood claims with a loss year from 1978 through 2025. The claims dataset is as of September 8, 2026. ZIP code 77012: the median National Flood Insurance Program policy cost for single-family homes was $1,080 a year, the middle of 68 policies that started between August 1, 2025 and July 31, 2026. Half of them cost between $931 and $1,271. These policies are priced under Risk Rating 2.0. ZIP code 77012: NFIP records list 166 flood claims with a loss year from 1979 through 2025. The claims dataset is as of September 8, 2026. ZIP code 77087: the median National Flood Insurance Program policy cost for single-family homes was $874 a year, the middle of 566 policies that started between August 1, 2025 and July 31, 2026. Half of them cost between $682 and $1,081. These policies are priced under Risk Rating 2.0. ZIP code 77087: NFIP records list 1,099 flood claims with a loss year from 1978 through 2025. The claims dataset is as of September 8, 2026.
How big are the last-resort insurance plans in Texas?
Texas Windstorm Insurance Association: Total policies in force, as of 6/30/2026: 288,676. Texas FAIR Plan Association: As of June 30, 2026: TFPA insures 118,486 properties.
What should I ask an insurance agent about a home in Harrisburg?
Ask the agent how old the roof is. Ask whether a wind-mitigation discount is available for this house. Ask how flood coverage differs from the homeowners policy. A standard homeowners policy does not cover flood. Flood coverage is a separate policy. Ask whether the policy has a separate hurricane or windstorm deductible, and how that deductible is calculated. Ask when coverage would start. A new National Flood Insurance Program policy generally takes effect 30 days after purchase.
Sources: OpenFEMA NFIP Redacted Policies v3; OpenFEMA NFIP Redacted Claims v3; FEMA National Risk Index, Census Tracts, 1.20.0 (December 2025); USDA Forest Service, Wildfire Risk to Communities, community summaries; Wildfire Risk to Communities methods; Texas Department of Insurance, Texas Windstorm Insurance Association Overview; Texas FAIR Plan Association Fact Book, Q2 2026.
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Hurricane storm surge in Harrisburg
Storm surge is seawater pushed onto land by a hurricane’s winds. NOAA’s National Hurricane Center (NHC) maps a near worst-case surge for each hurricane category, arriving at high tide, from thousands of simulated storms (NOAA National Hurricane Center, National Storm Surge Risk Maps, Version 4 (Texas to Maine, high tide scenario, GeoTIFF dated June 17, 2026)).
In those maps, about 1.9% of Harrisburg’s mapped area has surge flooding above ground in a Category 1 hurricane, 11.1% in a Category 3 and 95.3% in a Category 5.
| Hurricane | Area with any surge flooding | More than 3 ft | More than 6 ft | More than 9 ft | Deepest band mapped |
|---|---|---|---|---|---|
| Category 1 | 1.9% | 1.1% | 0.4% | 0.3% | 9–10 ft |
| Category 2 | 3.4% | 2.3% | 1.5% | 0.6% | 14–15 ft |
| Category 3 | 11.1% | 8.6% | 6.5% | 4.4% | more than 20 ft |
| Category 4 | 57.3% | 27.3% | 15.8% | 11.3% | more than 20 ft |
| Category 5 | 95.3% | 92.1% | 60.8% | 27.7% | more than 20 ft |
FEMA’s National Risk Index, which compares every U.S. census tract, rates hurricane risk (wind, surge and expected losses together) for the tracts that cover Harrisburg as: “Relatively Moderate” for 85%; “Relatively High” for 15% of the area. Their hurricane risk scores range from 83 to 91 out of 100; a score is a national percentile, so 91 means higher hurricane risk than about 91% of U.S. census tracts (FEMA National Risk Index, Census Tracts feature layer, Version 1.20.0 (December 2025)).
NHC: “The data, maps, and information provided should only be used as a tool for general education/awareness of the storm surge hazard at a city/community level (not for a parcel level/grid cell assessment).” The maps do not account for erosion, subsidence, sea-level change or future construction, and NHC says they “should not be used to replace the maps used for hurricane evacuation zones.” Find out whether your address is in an evacuation zone (below) and follow official orders.
Hurricane evacuation zone
We do not show evacuation zones for Houston yet. Check the official source: Houston-Galveston Area Council: Hurricane Evacuation Zip-Zone maps.
Extreme heat in Harrisburg
FEMA’s National Risk Index rates heat wave risk for the census tracts that cover Harrisburg as: “Relatively Moderate” for 56%; “Relatively Low” for 44% of the area. Their heat wave risk scores range from 49 to 79 out of 100 (national percentiles). The index weighs how often heat waves happen, what they are expected to cost, and how vulnerable and resilient the community is, so a dense area can rate differently from a nearby one (FEMA National Risk Index, Census Tracts feature layer, Version 1.20.0 (December 2025)).
Trees shade streets and buildings and cool the air around them (U.S. EPA: Using Trees and Vegetation to Reduce Heat Islands). In the USDA Forest Service’s 2025 satellite-based tree canopy map, trees cover about 12% of Harrisburg’s area on average, compared with 14% for Houston as a whole (the 18 Houston areas on this site combined) (USDA Forest Service. 2026. USFS NLCD Percent Tree Canopy CONUS v2025-6 (2025 map). Salt Lake City, UT).
During a heat advisory, follow the National Weather Service: Heat Safety guidance. Neighborhood averages cannot tell you how hot a particular home, block or unit gets.
Tornado risk in Harrisburg
FEMA’s National Risk Index rates tornado risk for the census tracts that cover Harrisburg as: “Relatively High” for 70%; “Very High” for 30% of the area. Their tornado risk scores range from 76 to 95 out of 100 (national percentiles). The rating weighs how often tornadoes have struck, what is exposed to them and how well the community can recover (FEMA National Risk Index, Census Tracts feature layer, Version 1.20.0 (December 2025)).
Here tornadoes can come with hurricanes and tropical storms as well as with spring thunderstorms. A rating for a whole tract cannot tell you how a particular building would fare; check whether a home insurance policy has a separate windstorm deductible, and know where the safest interior room is.
This product uses the Federal Emergency Management Agency’s National Risk Index dataset API or downloadable datasets but is not endorsed by FEMA. The Federal Government or FEMA cannot vouch for the data or analyses derived from these data after the data have been retrieved from the Agency's website(s). FEMA: “The National Risk Index data are meant for planning purposes only. This National Risk Index dataset was created for broad nationwide comparisons and is not a substitute for localized risk assessment analysis.”
Before you rent or buy in Harrisburg
- Look up the exact address on the FEMA Flood Map Service Center; a neighborhood can mix high-risk and minimal-hazard zones.
- Ask the landlord or seller about past flooding and flood insurance claims at the property.
- Get a flood insurance quote early: new NFIP policies usually take 30 days to start (FloodSmart (NFIP): Buy a Flood Insurance Policy).
- Ask which floor the unit is on and where parking, storage and mechanical equipment sit.
- Hiring movers? Check the moving company’s federal license and insurance first with the free Houston mover check.
Living in Harrisburg
Flood maps are only one part of choosing a neighborhood. To compare Harrisburg with other Houston neighborhoods on more than flooding, see Houston on StrollPlace.
Buyer and renter FAQ
Does Harrisburg flood?
Yes. Insured properties in and around Harrisburg have filed flood claims. About 12% of Harrisburg’s mapped area is inside FEMA’s Special Flood Hazard Area; the rest is in moderate or minimal-hazard Zone X. NFIP flood insurance records list 253 claims from the Census block groups that cover Harrisburg, from 1978 through 2024. 153 of them received a payment, totaling $6,220,956 (not adjusted for inflation). The busiest years were 2008 (51 claims), 2017 (44 claims), 2001 (29 claims). Past claims do not predict future flooding, and conditions vary street by street, so check the specific address.
Is Harrisburg in a flood zone?
About 12% of Harrisburg’s mapped area is inside FEMA’s Special Flood Hazard Area; the rest is in moderate or minimal-hazard Zone X. Shares by zone: X (unshaded, minimal) 83%; AE 12%; X (shaded, 0.2% annual chance) 5.0%; A 0.0%.
Which streets in Harrisburg are in a high-risk flood zone?
No street listed here has most of its length in FEMA high-risk zones. Less than 10% of I-610, Lawndale St, Fennell St, Evergreen Dr, Keller St, Narcissus St, Manchester St and Berkley St does. Zones can change along a street, so check the exact address.
What ZIP code is Harrisburg in?
Harrisburg is in Houston, TX. ZIP codes 77017, 77012 and 77087: the ZIP codes on most of the flood insurance claims counted here. ZIP codes do not follow neighborhood lines. Check the specific address for its own flood zone.
Do renters need flood insurance?
Standard renters policies usually do not cover flood. Renters in a community that participates in the NFIP can buy contents-only flood coverage, up to $100,000 for belongings.
How long does a new flood policy take to start?
A new NFIP policy generally takes effect 30 days after purchase. Exceptions include no wait when the policy is bought while making, increasing, extending or renewing a mortgage, and a one-day wait in a newly designated high-risk zone within 12 months of the map change.
How much coverage can NFIP provide?
For a one-to-four family home, NFIP building coverage goes up to $250,000 and contents coverage up to $100,000. You can buy flood insurance even if you are not in a high-risk zone, as long as your community participates in the NFIP.
Does storm surge reach Harrisburg?
In NOAA’s National Hurricane Center near worst-case maps, about 1.9% of Harrisburg’s mapped area floods from storm surge in a Category 1 hurricane, 11.1% in a Category 3 and 95.3% in a Category 5. These maps are for awareness at a community level, not for a single building.
Is Harrisburg at risk of tornadoes?
FEMA’s National Risk Index rates tornado risk for the tracts that cover Harrisburg as “Relatively High” for 70%; “Very High” for 30% of the area. It compares places nationally; it is not a forecast.
How much is flood insurance in Harrisburg?
The typical NFIP flood insurance policy on single-family homes in Harrisburg cost $1,069 a year: the median of 51 policies that started between August 1, 2025 and July 31, 2026. Half cost between $907 and $1,187. One building’s quote can be far from this; its elevation, foundation, age, coverage and deductible all change the price.
Are insurers dropping homes in Harrisburg?
In ZIP code 77017, insurers did not renew or cancelled for reasons of their own at least 117 homeowner-type policies in April–July 2026: 29.2 for every 1,000 policies in force, above the Texas rate of 14.2. That counts every nonrenewal and every cancellation with a reason on the insurer’s side, not cancellations for nonpayment or at the policyholder’s request. Insurers also turned down 286 applications there over the same months. Source: Texas Department of Insurance HB 2067 data.
FAQ sources: FloodSmart (NFIP): Buy a Flood Insurance Policy; FEMA Fact Sheet: Think you don’t need flood insurance? Think again (Jan. 21, 2025); 44 CFR 61.11, Effective date and time of coverage.
Nearby neighborhoods
- Does Magnolia Park flood?
- Does Eastwood flood?
- Does Riverside Terrace flood?
- Does Sunnyside flood?
- Does Woodland Heights flood?
- Does Braeswood flood?
How these numbers were made
Area: the census-based definition above, using U.S. Census Bureau TIGERweb, 2010 Census Block Groups and U.S. Geological Survey, Geographic Names Information System (GNIS) domestic names. Flood zone shares: the area polygon intersected with FEMA National Flood Hazard Layer (NFHL), Flood Hazard Zones and FIRM Panels, area computed in an equal-area projection; retrieved October 23, 2026. Claims: OpenFEMA NFIP Redacted Claims v3 records for Harris County (county code 48201), dataset as of September 8, 2026, retrieved October 23, 2026. Claims are counted for exactly the block groups that make up the area. Block groups used: 482013113002, 482013113003, 482013112001, 482013114001, 482013202001, 482013201001, 482013115003, 482013115001, 482013115002, 482013116003, 482013116001, 482013116002, 482013113001, 482013115004. Neighboring pages can share a block group, so their counts can overlap. Paid totals add building, contents and Increased Cost of Compliance payments and are not adjusted for inflation; a claim whose FEMA record shows a negative payment (an adjustment) counts as zero. Storm surge: the area polygon overlaid on NHC’s Category 1–5 high-tide inundation GeoTIFFs (about 10 m cells in 1-ft depth classes); each share is the fraction of cells whose center lies inside the polygon and that NHC maps with water above ground, counting cells NHC leaves blank as not flooded. Tree canopy: the mean of the 2025 NLCD Tree Canopy Cover values (0–100%, 30 m cells in an equal-area projection) for cells whose center lies inside the polygon. Tornado: the FEMA National Risk Index tornado rating and score of each census tract that covers the neighborhood, weighted by its share of the area. FEMA National Risk Index: census tracts intersected with the polygon in an equal-area projection; each rating’s share is the share of the polygon covered by tracts with that rating (tracts covering less than 1% are left out; together the tracts used cover 100%). We do not compute a new score. Tracts used: 48201311400 (26%), 48201320201 (18%), 48201311502 (16%), 48201311300 (15%), 48201311200 (7.9%), 48201311501 (7.6%), 48201320100 (5.4%), 48201311600 (4.9%). See the methodology.
Sources
- Federal Emergency Management Agency (FEMA), FEMA OpenFEMA Dataset: FIMA NFIP Redacted Claims - v3. Retrieved on October 23, 2026.
- FEMA National Flood Hazard Layer (NFHL), Flood Hazard Zones and FIRM Panels. Retrieved on October 23, 2026.
- U.S. Census Bureau TIGERweb, 2010 Census Block Groups and U.S. Geological Survey, Geographic Names Information System (GNIS) domestic names.
- FEMA Glossary: Flood Zones.
- FloodSmart (NFIP): Buy a Flood Insurance Policy.
- FEMA Fact Sheet: Think you don’t need flood insurance? Think again (Jan. 21, 2025).
- 44 CFR 61.11, Effective date and time of coverage.
- OpenFEMA Terms and Conditions.
- NOAA National Hurricane Center, National Storm Surge Risk Maps, Version 4 (Texas to Maine, high tide scenario, GeoTIFF dated June 17, 2026) (computed October 23, 2026).
- Zachry, B. C., W. J. Booth, J. R. Rhome, and T. M. Sharon, 2015: A National View of Storm Surge Risk and Inundation. Weather, Climate, and Society, 7(2), 109–117 (NHC’s preferred citation).
- Houston-Galveston Area Council: Hurricane Evacuation Zip-Zone maps.
- USDA Forest Service. 2026. USFS NLCD Percent Tree Canopy CONUS v2025-6 (2025 map). Salt Lake City, UT (30 m cells; read October 23, 2026).
- National Weather Service: Heat Safety.
- U.S. EPA: Using Trees and Vegetation to Reduce Heat Islands.
- FEMA National Risk Index, Census Tracts feature layer, Version 1.20.0 (December 2025) (retrieved October 23, 2026).
- FEMA OpenFEMA Dataset: FIMA NFIP Redacted Policies - v3.
- Texas Department of Insurance, HB 2067 residential property data: actual number of declinations, cancellations and nonrenewals (data.texas.gov).
- Texas Department of Insurance, HB 2067 residential property data: reasons for declinations, cancellations and nonrenewals (data.texas.gov).
- Texas Department of Insurance, HB 2067 residential property data: policy counts (data.texas.gov).
- OpenFEMA NFIP Redacted Policies v3.
- OpenFEMA NFIP Redacted Claims v3.
- FEMA National Risk Index, Census Tracts, 1.20.0 (December 2025).
- USDA Forest Service, Wildfire Risk to Communities, community summaries.
- Wildfire Risk to Communities methods.
- Texas Department of Insurance, Texas Windstorm Insurance Association Overview.
- Texas FAIR Plan Association Fact Book, Q2 2026.
- U.S. Census Bureau TIGERweb, Transportation (primary, secondary and local roads).
Data as of September 8, 2026 (FEMA claims) and October 23, 2026 (flood zones); hazard data computed October 23, 2026. Page last updated October 28, 2026.