Ohio Kentucky Indiana Regional Council of Governments (OKI) houses regional environmental datasets made available to regional communities. Often officials in our communities lack the GIS capacity to conduct extensive analysis in-house. OKI has advanced our approach to web applications with increasingly complex analysis for local communities. This presentation will review environmental tools provided by OKI, focusing on the Environmental Mitigation and Suitability Modeler (EMSM). EMSM users select from 21 layers, weigh layers and features to model using the suitability widget in ESRI’s WebAppBuilder. A discussion of use cases and lessons learned will follow so attendees can build similar online models.