Hydrology
The water itself — where it falls, flows, collects and floods — and who is exposed when it does.
Effective flood hazard from the FEMA NFHL beside the community's own drainage network and complaint history, gauge and time-series records in OGC WaterML 2.0, and survey and bathymetry to IHO S-44 order. It supports floodplain administration, CRS credit and planning — it is not a hydraulic or hydrologic model.
Flood risk, water resource, and the survey underneath both
Effective flood hazard and floodplain administration, drainage and stormwater, gauge and water-balance records, and the survey and bathymetry the rest is measured on. Live ones open what runs today; the rest are marked Soon.
Watershed & Water Resources Portal
Catchment, abstraction points and protection zones
OGC WaterML 2.0 · basin delineationFloodplain Programme Manager
Elevation certificates, floodplain permits, substantial-improvement tracking
NFIP · CRS activity 310/510Community Flood Risk Portal
Resident-facing: your flood zone, your requirements, your documents
NFIP outreach · CRS activity 330Coastal Hazard & Inundation
Surge, sea-level rise and inundation exposure for coastal assets
FEMA coastal flood · IPCC SLRHydrographic Survey Tracker
Survey coverage, age and priority for resurvey
IHO S-44 survey standardsCoastal Permit & Concession Map
Foreshore concessions, permits and compliance status
Coastal zone regulationMarine Spatial Data Catalogue
MSDI catalogue over bathymetry, coastal and marine datasets
IHO S-100 MSDI · OGC API-RecordsFlood Hazard Map Portal
Published flood extents and depths from the modeller, made usable
NFHL-style hazard publicationRainfall & Streamflow Monitor
Gauges, levels and rainfall in near-real time over the basin
OGC WaterML 2.0 (ISO 19156)Flood Early Warning Map
Thresholds, alerts and who is downstream when one trips
CAP 1.2 alertingWadi & Drainage Basin Atlas
Basins, wadis, culverts and the drainage network as one published layer
Basin delineation practiceGroundwater Level & Abstraction
Wells, levels, licences and abstraction against the allocation
OGC WaterML 2.0 · abstraction licenceDam & Reservoir Monitoring
Storage, inspection status and downstream exposure per dam
OGC WaterML 2.0 · dam safety regimeWater Balance & Allocation
Supply, demand and allocation across the basin, mapped
OGC WaterML 2.0 · basin planFlood and water data exists — just not where the decision is made
Flood maps, gauge records and bathymetry are published by different agencies in different formats, so the people planning, permitting and responding rebuild the same picture from scratch every time.
What it covers
On Strata, or on your existing Esri services
Publishing and exposure over other people's model outputs — exactly our read-only sweet spot.
Sovereign by default
Deployed on your own servers, on-prem or in your cloud — with a local model option, so no data or prompt leaves the building.
Honest boundary
Naming what this doesn't do is what makes where it wins believable.
Where it stops
We do not model hydrology or hydraulics. The modeller's outputs are our input.
Build it yourself, or have us deliver it
Every solution starts from an open, AI-guided template — build it yourself for free, or have us deliver and support the finished result.
DIY — the free open template
Clone the open (MIT) repo, follow the AI-guided setup, and run it on Strata Free — on your own data, on your own servers. Yours to customize, no license.
Clone the recipe →Delivered + supported
We stand it up, customize it with AI on your data and jurisdiction, load your first layers, and support it — delivery, license and annual support on Strata Team or Unlimited.
Serve your data. Then talk to it.
Strata serves your spatial data over the ArcGIS REST protocol, then lets anyone explore it in plain language — on-prem and sovereign, at a fraction of Enterprise cost. Keep your Esri licenses.