GeoSTORM
Stormwater modeling software with EPA SWMM graphical interface. FEMA-approved for National Flood Insurance Program studies. Supports urban and rural stormwater design with automated watershed delineation, detention pond design, and green infrastructure readiness.
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Hidden Pricing
2.4 /5 composite score
C1 1/5 reflects no public pricing (RF1); C2 2/5 reflects AutoCAD/MicroStation plugin model without standalone API; C3 3/5 reflects specialized stormwater domain, moderate adoption curve; C4 3/5 reflects SWMM/watershed data interchange; C5 3/5 reflects ArcGIS, Google Maps, AutoCAD/MicroStation integrations. Market leader in stormwater: G2 4.7/5 (500+ verified reviews). FEMA-approved engine.
Situational
Rubric Scorecard
| Criterion | Score | Evidence |
|---|---|---|
| Value for the price | 1/5 | unknown Source → |
| Agent Friendliness | 2/5 | -- |
| Ease of adoption | 3/5 | -- |
| Portability & lock-in | 3/5 | 1 file formats |
| Interoperability | 3/5 | 4 integrations |
Pricing
Modelunknown
Free tierno
Free viewerno
Trialyes
How we verified this: we checked GeoSTORM against its live site and an independent source — civilgeo.com. Nothing on this page is listed from memory. See how we grade. Verified 2026-09-01.
Evidence
File formats
| Format | Direction | Support |
|---|---|---|
| DWG | unknown | unknown |
Integrations
AutoCAD MicroStation ArcGIS (Esri) Google Maps
Also covers
GeoSTORM also appears in these sub-categories:
EPA SWMM hydraulic modeling engine with multiple hydrology methods (Rational, SCS, CUHP, SBUH) for watershed and detention analysis.
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