Masa Lab

Build cities that don’t flood.

Masa means fish in Marathi.

They are the first citizens of any water body, and the clearest sign of its health.

Products

Two modern tools for EPA SWMM5. Built by a water engineer, for water engineers.

swmm.app

Open any EPA SWMM5 model in your browser. Nothing installed, nothing uploaded.

Open swmm.app

SWMM AgentBeta

Let Claude drive the EPA SWMM5 desktop GUI in plain English.

Try SWMM Agent
Claude Codev2.1.101
C:\Models\downtown-stormwater
Junction J1
Invert elevation102.35 ft
Max depth6.0 ft
Initial depth0.0 ft
Ponded area0.0 sq ft

Consulting & custom builds

When your problem needs more than the hydraulic modelling tools can give out of the box.

01

Custom tools, plugins & integrations

Custom plugins and extensions that automate the work inside InfoWorks, SewerGEMS, MIKE+, EPA SWMM5, and the rest. Plus connectors that bridge them to your GIS, asset management, CAD, SCADA, or reporting stack.

02

Live hydraulic modelling

Real-time hydraulic runs wired to your rain gauges and flow sensors, so your team can see what the network is actually doing right now. Not what last week's static model predicted.

03

Digital twins

A continuously running, sensor-fed hydraulic model of your network, on whichever platform you run it, that stays current with reality as the network and the weather change.