Esri Business Partner since 1998

GIS that gets the right help to the right place.

TerraSystems Southwest builds and maintains the address points, road networks, and spatial data agencies rely on for NG911, planning, and day-to-day mapping.

Talk with the team See services

27 years in Tucson 72-hour NG911 corrections NENA standards

1998Founded

ADHSClient since 2016

100%Spatial accuracy cited

Services

Specialists, not a generalist shop.

A small Tucson team that lives in the data agencies actually use: addresses, centerlines, rights-of-way, and the workflows that keep them current.

NG911 & daily mapping

Address points, road networks, rural addressing, subaddressing, and error corrections against NENA standards — typically within 72 hours.

Esri / ArcGIS implementation

Technology selection, workflow evaluation, geodatabase design, and integration so the software matches how your staff actually works.

Data creation & conversion

Legal description mapping for rights-of-way and jurisdictional boundaries using coordinate geometry and documented QA.

Geospatial project management

Large conversions, application design, and multi-agency projects with a principal on the work — not a rotating junior bench.

Analysis & decision tools

Reproducible spatial analysis, suitability models, and custom applications when off-the-shelf maps are not enough.

Support & training

On-call help, knowledge transfer, and training so your team can keep the system after the project closes.

Public safety

NG911 is the core of the practice.

TSSW has been part of NG911 migrations: cleaning historical addressing anomalies, building rural address points, and keeping road centerlines that first responders can trust.

If a call comes in at 2 a.m., the map has to be right. That is the standard we work to.

Typical engagement

Audit existing address points and centerlines against NENA
Repair anomalies and document the methodology
Stand up a 72-hour correction workflow
Train in-house staff and remain on call

Track record

Agencies already trust the work.

Portfolio includes federal agencies, Arizona counties and municipalities, Councils of Government, conservation groups, and planning firms. ADHS work since 2016 includes dispensary location mapping at cited 100% spatial accuracy.

Arizona Dept. of Health Services Pima County City of Tucson Maricopa Association of Governments Central Arizona Association of Governments The Nature Conservancy Tucson Electric Power Arizona Geographic Information Council Cochise County Mohave County Arizona State Land Department

“TSSW’s proactive approach to problem-solving has significantly improved the efficiency and reliability of our Next Generation 9-1-1 database operations.”
— Steve Engle — GIS Coordinator, Mohave County Information Technology

“Their commitment to the project, professionalism, unique skill sets, and enthusiasm to produce a complete dataset made it a reality.”
— Jenna Leveille — Former Deputy State Cartographer, Arizona State Land Department

“TSSW successfully transformed a mix of electronic records, legacy data, and non-digital sources into high-quality GIS datasets suitable for advanced analysis and modeling.”
— BJ Willis — Director, Wayne County 9-1-1 Emergency Management, WV

Tucson

Need a partner who already knows Arizona addressing?

Email the office. A principal will respond.

info@terrasw.com