Beta software, current installations, version updates, documentation, and tutorials are available for download on this page in addition to full installations of previous software versions.

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AHGW Downloads

AHGW installations include the Groundwater, MODFLOW, and Subsurface Analysts.

Arc Hydro Groundwater 2.1 Full Installation - 2/9/10 180 MB
Important: AHGW 2.1 requires ArcGIS 9.3 or higher.

Arc Hydro Groundwater 2.0 Full Installation - 11/4/09 38 MB
AHGW 2.0 is compatible with ArcGIS 9.2 and 9.3.

Once the AHGW Tools have been downloaded and installed, users will need to go through the online registration process to get an evaluation password in order to use the AHGW Tools. The registration process can be found on the Help menu of the AHGW Toolbar in ArcGIS.

GMS Downloads

GMS 7.1 Full Installation - 2/17/10 205 MB
GMS 7.1 Program Update - 2/17/10 205 MB

   GMS 7.0 Program Update - 2/22/10 43 MB
   GMS 7.0 Full Installation - 2/22/10 199 MB

SMS Downloads

SMS 10.1 Full Installation (32-bit) - 3/9/10 266 MB
SMS 10.1 Program Update (32-bit)* - 3/9/10 20.0 MB
SMS 10.1 Full Installation (64-bit; works with 64-bit OS only) - 3/9/10 277 MB
SMS 10.1 Program Update (64-bit)* - 3/9/10 23.3 MB

   SMS 10.0 Full Installation - 2/10/09 216 MB
   SMS 10.0 Program Update - 2/10/09 37 MB

   Additional CGWAVE tutorial files - 15 MB
   Additional PTM tutorial files - 229 MB
   Additional TUFLOW tutorial files - 146 MB
   LeProvost Tidal Database files - 9 MB
   Atlantic and Pacific Tidal Database Extraction Utilities - < 1 MB
   Atlantic Tidal Database and Grid Files - 64 MB
   Pacific Tidal Database and Grid files - 32 MB

*SMS 10.1 patch is compatible with SMS 10.1.1 and later. If patching SMS 10.1.0, please patch using the full installation.

WMS Downloads

WMS 8.3 Full Installation - 3/10/10 553 MB
WMS 8.3 Program Update - 3/10/10 18.1 MB

   WMS 8.2 Full Installation - 9/21/09 600 MB
   WMS 8.2 Program Update - 9/21/09 64 MB

   FHWA HY-8 7.2 Culvert Analysis Software - 32 MB
   FHWA HY-8 7.2 Quick Start and Tutorial Document - 1 MB
   FHWA HY-8 7.1 Quick Start and Tutorial Document - 1 MB
   GSSHA Tutorial Files - 8/12/05 55 MB
   HEC-RAS 3.1.2 - 45 MB
   HSPF 2.2 - 11/29/2004 24 MB
   Maricopa County, AZ - Flood Control Data - 61 MB
   NFF 3.2 - 11/29/2004 8 MB

Hardware Locks

Hardware Locks Drivers for SINGLE USER LOCKS - 3 MB
Hardware Lock Drivers and Utilities for NETWORK SERVERS - 6 MB