utilian.com

What it is

GeoSWMM, the flagship product from Utilian Inc., is professional software for stormwater, wastewater collection system, and flood modeling. It is aimed at water and infrastructure engineers, municipal and utility agencies. The platform combines H&H modeling, GIS, and data analysis, with a focus on stormwater infrastructure planning, flood management, water pollution control, compliance, asset reporting, and stakeholder communication.

Core features

GeoSWMM runs on the ArcGIS Pro platform and is described as 100% compatible with EPA SWMM 5. Its capabilities cover model building, parameter preparation, quality control, and visualization, including watershed delineation, DEM clipping and stream burning, overland flow path generation, a GIS-Based Model Builder, SWMM .inp import/export, and calculations for land use parameters, imperviousness, slope, width, and pipe roughness. For quality control, it provides network connectivity checks and a control rule editor. For results analysis, it supports 1D flood mapping, dual drainage modeling, integrated 1D-2D modeling, 2D assessment and visualization, as well as time-series charts, scatter plots, profile plots, and export in multiple formats.

Pricing and trial

Pricing information is relatively transparent. The free trial lasts 30 days, allows up to 30 nodes/links, and supports the full set of 1D modeling features. The Academic plan is $50 for 180 days; Standard 1D is $1,595/12 months; Standard 2D is $2,795/12 months; and Team starts with a $4,995 base fee plus $1,995 per license, including multi-user license management. Note that the dependency on ArcGIS Pro may add extra costs.

Pros and cons

Its strengths are its high level of vertical specialization and complete GIS workflow, connecting model preparation, SWMM simulation, flood mapping, and report output. It also offers a relatively rich set of resources, including tutorials, user manuals, videos, and Release Notes. Limitations include the lack of disclosed information on data security compliance, APIs, and payment methods. Team capabilities appear to focus mainly on license management, with no clear evidence of granular permissions or collaborative editing. The node limits for the free and academic editions are also relatively small.

Who it is for and access from China

GeoSWMM is best suited to municipal, water utility, consulting engineering, and university research teams that already have an ArcGIS Pro foundation, especially for stormwater modeling, sewer overflow analysis, floodplain analysis, and scenario comparison. The available text does not make it possible to assess access from China, and payment methods are not disclosed. If network access or procurement is constrained, alternatives worth evaluating include EPA SWMM, HEC-HMS, HEC-RAS, and commonly used domestic water resources and municipal engineering platforms.