Did a Search and found these. Did some cut and paste, so there may be duplicates.
A more complete list of the major nets along the Front Range of Colorado
Denver Metro VHF 146.940 Primary PL 91.5 Weather Mode
PL 103.5 Non-weather mode
Denver Metro VHF 146.805 Sec ondary PL 186.2 Backup, informal use
Denver Metro UHF 449.450 PL 91.5 Weather Mode
PL 103.5 Non-weather mode
Denver Metro UHF 447.175 PL 186.2 Backup, informal use
Denver Metro UHF 446.000 Car-to-car simplex
Arapahoe Cnty ARES - 146.880 PL 100.0 Primary Many times active when severe weather in Arapahoe County, not Skywarn but frequently coordinates with Denver Skywarn
Arapahoe Cnty ARES - 146.640 Secondary Many times active when severe weather in Arapahoe County, not Skywarn but frequently coordinates with Denver Skywarn
Douglas/Elbert Cnty ARES - 147.225 PL 107.2 Primary Many times active when severe weather in Douglas/Elbert County, not Skywarn but frequently coordinates with Denver Skywarn
Douglas/Elbert Cnty ARES - 145.145PL 107.2 Secondary Many times active when severe weather in Douglas/Elbert County, not Skywarn but frequently coordinates with Denver Skywarn
Colorado Springs VHF 146.97 PL 100.0 Primary (El Paso/Teller Cnty)
wx discussion:12:30pm, update:3pm SVR days in season
Colorado Springs VHF 147.345 Secondary (EL Paso/Teller Cnty)
Northern Colo VHF 145.115 PL 100.0 Primary Larimer Cnty/Western Weld Cnty Wx Net (146.85 Backup)
Northern Colo VHF 146.850 Secondary Larimer Cnty/Western Weld Cnty
146.940 is Metro Denver's Skywarn primary frequency.
147.225 is Douglas/Elbert ARES, which will become active on high risk days.
146.880 is Arapahoe Cnty ARES, which has been active some days this season for severe weather.
146.970 is El Paso Cnty/Teller ARES & Skywarn net, perhaps the most active group in the state. In there case, ARES runs the Skywarn nets, in Denver's area, ARES does not, but may suppliment, or spot for their particular county.
Also, 146.940 has a daily weather reporting net between 630am-730am where the previous days high, low and precipitation is reported. An HF net also occurs, on 3.945 LSB.
Just a note on the 146.97 ElPaso and Teller county skywarn and ARES, we have a Skywarn net every day at 12:30 and 3:30 local, it usally consists of the days outlook and Severe weather advisories.