Severe storm history can affect roof, envelope, vehicle, crop, utility, and business-interruption exposure.
Houston City Hall, 901 Bagby St, Houston, TX 77002
The overall score of 60 indicates a High screening result, but one severe signal deserves extra attention. Severe weather is the standout concern, while environmental site adds enough supporting risk to keep the location from reading as a routine average.
Use this as a screening and prioritization report. Higher scores identify locations that deserve closer review; they do not prove site-specific damage, contamination, engineering failure, or legal liability.
All currently enabled location-risk modules returned usable results.Overall Location Risk
The overall score of 60 indicates a High screening result, but one severe signal deserves extra attention. Severe weather is the standout concern, while environmental site adds enough supporting risk to keep the location from reading as a routine average.
Explain overall score 60 on a 0-100 scale
Top risk drivers
The strongest signals to review before making a location decision.
Environmental site signals can affect transaction diligence, lender review, redevelopment planning, agency-file review, and liability questions.
Earthquake exposure can affect structural retrofit needs, liquefaction questions, insurance decisions, and emergency planning.
Risk modules evaluated
Each module contributes to the overall score based on configured weights and data confidence.
Hydrology Risk Index: 37 (Low). Primary driver: NOAA 100-year 24-hour rainfall is 17.0 in, indicating elevated storm-load stress. Key amplifier: Limited freeboard margin (+2.6 ft above BFE). Key dampener: Steeper terrain (90.0°) supports runoff over ponding. Confidence note: gSSURGO map unit was found, but one key soil hydrology attribute is unavailable.
Severe Weather Risk: 90 (Very High). Primary driver is Tornado; nearby history includes 660 hail reports, 802 damaging-wind reports, and 681 tornado paths within the scoring radii.
Wildfire Risk: 20 (Low). Primary driver is Historical burn perimeter proximity; FEMA NRI rating is No Rating, and nearest MTBS perimeter is 16.6 miles away.
Earthquake Risk: 39 (Low). Primary driver is FEMA NRI earthquake context; FEMA NRI rating is Relatively Low, and no mapped Quaternary fault found in the nearest-fault context.
Landslide Risk: 33 (Low). Primary driver is FEMA NRI landslide context; FEMA NRI rating is Relatively Low, susceptibility is Very Low, and no mapped landslide inventory feature found in the nearest context.
Environmental Site Risk: 66 (High). Primary driver is nearby cleanup sites; nearest regulated facility is 0.10 mi, nearest cleanup site is 0.13 mi, and TRI history shows 112 reporting facilities within 5 miles.
Professional review flags
Fast scan of the diligence checks suggested by the strongest location signals.
Environmental due-diligence review recommended
HighEnvironmental scored 66/100; nearest cleanup site is 0.13 mi and TRI history has 1421 facility-years within 5 miles.
Severe-weather resilience review recommended
HighSevere Weather scored 90/100 with Tornado as the primary driver.
Hydrology Risk Index
Hydrology Risk Index: 37 (Low). Primary driver: NOAA 100-year 24-hour rainfall is 17.0 in, indicating elevated storm-load stress. Key amplifier: Limited freeboard margin (+2.6 ft above BFE). Key dampener: Steeper terrain (90.0°) supports runoff over ponding. Confidence note: gSSURGO map unit was found, but one key soil hydrology attribute is unavailable.
Confidence: FEMA confidence: High. Inside a FEMA flood polygon at this coordinate. BFE is not expected for this FEMA zone. Water confidence: High. Nearest NHD feature found and distance computed. Terrain confidence: High. Rainfall confidence: High. Soil confidence: Medium. gSSURGO map unit was found, but one key soil hydrology attribute is unavailable. NRI confidence: High.
FEMA Flood
Terrain Drainage
Surface Water
Design Rainfall
Soil Drainage
Community Context
Indicators
Detailed hydrology evidence FEMA flood, terrain, surface water, rainfall, soil, and community context
FEMA Flood
Inside FEMA zone X (outside SFHA). Review local flood conditions, insurance needs, and elevation context carefully. Freeboard: +2.6 ft vs BFE.
Key facts
Indicators
Recommendations
-
Review freeboard marginMediumFreeboard margin is small. Confirm ground elevation (survey) and consider modest elevation/drainage improvements.Ref: Freeboard best practice
-
Use BFE as a design constraintMediumTreat BFE as a conservative planning constraint until ground elevation & slope risk are integrated.Ref: ASCE 24
-
Emergency readinessLowMaintain an emergency plan (evacuation routes, critical asset protection, and communications).Ref: FEMA preparedness
Terrain Drainage
Elevation 12 m. Terrain is steep with rolling (confidence: high). Ponding susceptibility is low.
Key facts
Indicators
Recommendations
-
General storm readinessLowTerrain suggests lower ponding susceptibility. Keep basic stormwater maintenance and emergency readiness.Ref: Preparedness
-
Erosion/runoff controlMediumSteeper slopes shed water quickly; watch for erosion and protect downslope assets and drainage channels.Ref: Erosion control
Surface Water
Nearest mapped surface water is a Lake/Pond — Perennial: Unnamed Lake/Pond — Perennial at 0.03 miles. This indicates shoreline/storage-water context rather than direct channel conveyance. This module is a mapped hydrography exposure signal and does not imply FEMA flood zone classification. Site is +3.5 m relative to the nearest water point.
Key facts
Indicators
Recommendations
-
Review drainage and site elevationHighVery close to surface water. Evaluate drainage pathways, elevation, and access impacts during storms.Ref: Operational continuity
-
Cross-check with FEMA flood zonesLowUse FEMA flood zones as the primary flood risk indicator; water proximity is context.Ref: FEMA / NFIP
Design Rainfall Stress
Design Rainfall Stress Index: 99 (Very High). 100-year 24-hour rainfall is 16.99 inches. 100-year 1-hour rainfall is 4.84 inches. Primary stress driver: 24-hour rainfall accumulation.
Key facts
Indicators
Recommendations
-
Review stormwater capacity under high design rainfallHighNOAA design rainfall indicates elevated storm stress. Review inlet capacity, detention, grading, and safe overflow paths using local design criteria.Ref: NOAA Atlas 14 / local drainage manual
-
Check short-duration drainage controlsHighHigh 1-hour design rainfall can overwhelm small drainage systems quickly. Pay special attention to inlets, roof drainage, culverts, and access-route ponding.Ref: Short-duration design storm
Soil Runoff & Drainage
Soil Runoff & Drainage Index: 55 (Moderate). Hydrologic group D; drainage class unknown drainage. Hydrologic group D with unknown drainage drainage indicates high runoff potential and limited infiltration under storm loading. Ponding is not specifically indicated by the available gSSURGO attributes.
Key facts
Indicators
Recommendations
-
Do not assume high infiltration capacityHighHydrologic group D or dual D classification can substantially limit infiltration-based mitigation. Confirm with site-specific soil/geotechnical information before design.Ref: Hydrologic Soil Group
-
Include soil drainage in stormwater reviewMediumSoil hydrology indicates moderate runoff or drainage constraints. Combine this with NOAA rainfall, terrain, and nearby water context.Ref: NRCS gSSURGO
FEMA NRI Community Context
FEMA NRI Community Context: 82 (High) for 980700. Flood context is Riverine: Very High; Coastal: Relatively Moderate; overall community risk is Relatively High. Use this as community-scale context, not a parcel flood-zone determination.
Key facts
Indicators
Recommendations
-
Use community flood context in prioritizationMediumFEMA NRI indicates elevated community-scale flood or recovery concern. Prioritize this asset for continuity planning when parcel-level hydrology is also elevated.Ref: FEMA National Risk Index
-
Review recovery and access assumptionsMediumSocial vulnerability or lower community resilience can affect recovery timelines, emergency access, and tenant/customer continuity after flood events.Ref: NRI social vulnerability / community resilience
Severe Weather Risk
Severe Weather Risk: 90 (Very High). Primary driver is Tornado; nearby history includes 660 hail reports, 802 damaging-wind reports, and 681 tornado paths within the scoring radii.
Indicators
Wildfire Risk
Wildfire Risk: 20 (Low). Primary driver is Historical burn perimeter proximity; FEMA NRI rating is No Rating, and nearest MTBS perimeter is 16.6 miles away.
Indicators
Earthquake Risk
Earthquake Risk: 39 (Low). Primary driver is FEMA NRI earthquake context; FEMA NRI rating is Relatively Low, and no mapped Quaternary fault found in the nearest-fault context.
Indicators
Environmental Site Risk
Environmental Site Risk: 66 (High). Primary driver is nearby cleanup sites; nearest regulated facility is 0.10 mi, nearest cleanup site is 0.13 mi, and TRI history shows 112 reporting facilities within 5 miles.
Indicators
What the strongest signals say
Mapped and contextual evidence carried forward by each enabled module.
Severe Weather
Storm history
660 hail, 802 wind, 681 tornado paths within scoring radii.
Environmental
FORMER CANAL STREET HEALTH CENTER
112 cleanup sites, 2147 quality-filtered ECHO facilities, and 1421 TRI facility-years within 5 mi.
Earthquake
Nearest mapped fault
0 mapped faults within 10 mi, 0 within 50 mi.
Hydrology
Hydrology score
Hydrology Risk Index: 37 (Low). Primary driver: NOAA 100-year 24-hour rainfall is 17.0 in, indicating elevated storm-load stress. Key amplifier: Limited freeboard margin (+2.6 ft above BFE). Key dampener: Steeper terrain (90.0°) supports runoff over ponding. Confidence note: gSSURGO map unit was found, but one key soil hydrology attribute is unavailable.
Landslide
Landslide inventory
0 inventory features within 5 mi; susceptibility Very Low.
Wildfire
GEORGE BUSH PARK
0 MTBS fires within 10 mi, 46 within 50 mi.
Recommended next actions
Same evidence, different decision lens. Use the row that best matches the person reading the report.
Buyer or investor
Use before offer terms, diligence scope, or go/no-go decisions.
Developer or operator
Use before design assumptions, site operations, or mitigation budgeting.
Lender or insurer
Use before underwriting, risk transfer, exclusions, or documentation requests.
Technical reviewer
Use to decide which specialist or source record should be checked first.
Recommendations
Practical next steps grouped from the report evidence, ordered by priority.
Request environmental due-diligence review before material decisions.
Review nearby cleanup-site records, regulatory databases, historical land use, vapor-intrusion indicators, and agency files with an environmental professional.
Reference: EPA CIMC cleanup sites, ECHO, RCRAInfo, and TRIReview roof, skylight, and exterior material vulnerability to hail.
Consider impact-rated roofing materials, roof age, recent inspection records, and insurance hail/wind deductibles.
Reference: SPC hail report historyReview wind-resilience details.
Check roof attachment, mature trees near structures, garage doors, exterior openings, and local building-code wind requirements.
Reference: SPC damaging-wind report historyAssess tornado sheltering and emergency readiness.
Confirm the property has a practical interior shelter area, emergency alert coverage, and any available safe-room or basement information.
Reference: SPC tornado path historyAssess financial resilience and continuity planning for earthquake disruption.
Community-scale loss and exposure can affect utilities, roads, emergency response, tenants, operations, and recovery timelines even when the parcel structure performs well.
Reference: FEMA NRI earthquake expected annual loss and exposureReview nearby regulated operations and compliance history.
Identify facility type, active status, violations, enforcement actions, toxic releases, and whether nearby operations could affect acquisition, lending, or redevelopment plans.
Reference: EPA ECHO, RCRAInfo, and TRIEvaluate whether toxic-release history is persistent or declining.
Use TRI history to distinguish one-time reporting from recurring nearby release activity, especially for carcinogen, PBT, or PFAS reporting.
Reference: TRI Basic historical facility-year aggregatesReview freeboard margin in design and operations planning
Freeboard margin is limited. Confirm the elevation basis if this is a sensitive site and consider modest resilience improvements where practical.
Reference: Freeboard best practiceStress-test drainage using NOAA design rainfall
NOAA design rainfall is elevated at this coordinate. Use the rainfall depths with site grading, soil, and drainage capacity checks before relying on map-only flood conclusions.
Reference: NOAA Atlas 14Use NRI as a portfolio prioritization layer
FEMA NRI indicates elevated tract/county-scale flood or recovery concern. Use it to prioritize reviews across many locations, but do not let it override parcel-level FEMA, terrain, water, rainfall, or soil evidence.
Reference: FEMA National Risk IndexReview tropical storm and hurricane exposure.
For coastal or near-coastal locations, check wind mitigation features, shutters/opening protection, evacuation zone context, and insurance exclusions.
Reference: NHC HURDAT2 track historyReview regional wildfire recurrence and operational continuity plans.
Historical burn density nearby can affect smoke, evacuation, utility disruption, and regional response capacity even when the parcel itself has not burned.
Reference: MTBS historical burn densityMaintain basic slope and drainage awareness.
The current signal is limited, but routine drainage maintenance, erosion monitoring, and review of local slope conditions remain prudent.
Reference: FEMA NRI and USGS landslide contextMethodology, sources, and interpretation guide
Static report guidance lives here so the main report stays focused on the decision.
Open report reference How to read, methodology, glossary, data sources, and limitations
How to read this report
Start with the decision signal, then use the evidence layers to understand what is driving the result.
Start with the top score
The Overall Location Risk score combines enabled modules into a 0-100 screening result.
Check confidence
Confidence explains whether the result is based on direct local data, fallback evidence, or broader context.
Review module drivers
Module rows show weighted contribution and the evidence behind the score, not only raw dataset values.
Use recommendations last
Recommendations translate the evidence into practical next actions for due diligence, design, or operations.
Evidence hierarchy
FEMA flood zone, SFHA, BFE/freeboard
Nearby NHD water and DEM terrain drainage
NOAA rainfall and gSSURGO soil behavior
FEMA NRI vulnerability, exposure, and resilience
SPC events and tropical cyclone track history
FEMA NRI wildfire context and MTBS burn perimeter proximity
FEMA NRI earthquake context and USGS fault proximity
FEMA NRI landslide context, inventory history, and susceptibility
EPA regulated facilities, releases, compliance, and cleanup context
Confidence quick guide
Direct local dataset match and key attributes were available.
Usable result with fallback, partial attributes, broader context, or one unavailable module.
Missing coverage, nearest-only interpretation, or insufficient source attributes.
How TrueViewly interprets the location
Scores are screening signals assembled from source evidence, confidence, and configured module weights.
Confidence levels
Direct coverage and key attributes were found for the coordinate.
The result is usable but depends on fallback, partial attributes, or supporting context.
Coverage is missing, indirect, incomplete, or unsuitable for strong conclusions.
Nearest FEMA polygons, missing BFE, unavailable DEM/rainfall cells, county-level NRI fallback, or unavailable modules can reduce confidence.
Scoring philosophy
- Overall Location Risk combines enabled module scores using configured weights.
- Module explanation rows show contribution to that module's score.
- Raw values, where relevant, are described inside the row explanation.
- Combined effects can add risk when multiple supporting signals align.
- Guardrails reduce overstatement when evidence is broad or incomplete.
Hydrology remains water/flood-specific. Other modules are scored separately, then combined only in the Overall Location Risk score.
Data sources and roles
Location risk glossary
Definitions for the main datasets, terms, and screening concepts used in the report.
SFHA
FEMA Special Flood Hazard Area, generally the 1-percent annual chance floodplain.
BFE
Base Flood Elevation, the flood elevation FEMA uses for mapped floodplain context where available.
Freeboard
Ground elevation compared with BFE. More positive freeboard generally means more elevation margin.
NHD
National Hydrography Dataset, used for mapped streams, rivers, canals, and waterbodies.
DEM
Digital Elevation Model, used for slope, elevation, and local relief context.
NOAA Atlas 14
Design rainfall estimates used to understand storm-load stress.
gSSURGO
NRCS soil survey database used for hydrologic group, drainage, ponding, and runoff context.
Hydrologic soil group
Soil runoff/infiltration class. Group A generally infiltrates better; group D generally has higher runoff potential.
NRI
FEMA National Risk Index, used here as tract/county-scale community context.
EAL
Expected Annual Loss, a FEMA NRI community-scale annualized loss estimate.
Social vulnerability
Community sensitivity to disaster impacts and recovery difficulty.
Community resilience
Community capacity to prepare for, respond to, and recover from hazard events.
SPC
NOAA Storm Prediction Center, used here for historical hail, damaging wind, and tornado reports/paths.
Hail magnitude
Source-reported hail size, generally expressed in inches.
Damaging-wind magnitude
Source-reported wind value from historical reports. Treat as event evidence, not a design wind-speed value.
HURDAT2
National Hurricane Center best-track archive for Atlantic and Northeast/Central Pacific tropical cyclones.
IBTrACS
International Best Track Archive for Climate Stewardship, used as a supplemental tropical cyclone track source.
MTBS
Monitoring Trends in Burn Severity, used here for historical mapped burn perimeter context.
Burn perimeter
Mapped boundary of a historical fire event; it is exposure evidence, not a current fire footprint.
Defensible space
Managed area around a structure intended to reduce wildfire ignition and spread potential.
Quaternary fault
A mapped fault with geologic evidence of movement during the Quaternary period, used as seismic-hazard context.
Fault class
USGS fault classification attribute. Class A generally indicates stronger evidence for Quaternary tectonic deformation.
Slip sense
General movement style of a fault, such as strike-slip, normal, or reverse.
Liquefaction
Soil behavior where saturated loose sediments can lose strength during shaking; not directly modeled by this module.
Landslide inventory
Mapped historical landslide points and polygons used for nearby event and mapped-area context.
Landslide susceptibility
Modeled relative tendency for landslide occurrence; not a parcel stability or slope-engineering determination.
Susceptibility grid
Sampled local representation of USGS raster values used for fast lookup and regional screening context.
ECHO
EPA Enforcement and Compliance History Online, used for regulated facility and compliance context.
TRI
EPA Toxics Release Inventory, used for latest-year and historical release reporting context.
CIMC
EPA Cleanups in My Community, used for Superfund, Brownfields, RCRA corrective action, and cleanup-site context.
Data-source appendix
What each source contributes, and where professional verification may still be required.
Important limitation
This report is not a boundary survey, engineering design, insurance determination, legal floodplain determination, weather or wildfire forecast, active-fire monitor, seismic engineering report, landslide hazard certification, Phase I environmental site assessment, contamination boundary map, geotechnical investigation, or substitute for local review.
FEMA NFHL
Regulatory flood zone, SFHA, BFE where available.
NHDPlus HR
Nearest mapped hydrographic features.
USGS DEM
Elevation, slope, local relief.
NOAA Atlas 14
Design rainfall intensity/depth.
NRCS gSSURGO
Soil runoff, drainage, ponding, infiltration.
FEMA NRI
Community risk, vulnerability, resilience.
SPC severe weather
Hail, damaging-wind, and tornado report/path history.
NHC HURDAT2 / IBTrACS
Tropical cyclone track and wind history.
FEMA NRI wildfire
Community wildfire risk, expected annual loss, frequency, and exposure context.
MTBS
Historical burn perimeter proximity and density.
FEMA NRI earthquake
Community earthquake risk, expected annual loss, frequency, and exposure context.
USGS Quaternary Faults
Mapped fault proximity, density, age, class, slip sense, and certainty context.
FEMA NRI landslide
Community landslide risk, expected annual loss, frequency, and exposure context.
USGS landslide inventory
Historical mapped landslide points and polygons.
USGS landslide susceptibility
Sampled modeled susceptibility grid.
EPA environmental datasets
ECHO, FRS, RCRAInfo, TRI, and CIMC facility/cleanup records.