Rainfall Rate Alarms:

0.5" in 10-min or less
1.0" in 1-hr or less
3.0" in 2-hr or less
5.0" in 6-hr or less

Stream gage alarm settings for stations located in Denver:
Note: The term "Threshold" in the following table is the stream level that must be exceeded before alarm checking for rate of rise occurs.

I.D. # Station Name Upper Limit Alarms Rate of Rise Alarms &
Thresholds
403 Montview Park 4.0’ (1 to 2yr, 10yr culvert capacity) 1.0' in 30-min above 2.0'
413 Kelly Road Dam 58.4’ (163 cfs, high level outlet elevation) 0.5’ in 1-hr above 50.0’
423 Expo Park 64.0’ (256 cfs, 1.6’ below spillway 0.5’ in 1-hr above 60.0’
424 Expo Park/Highline Canal 4.0’ (depth in canal) 1.0' in 30-min above 2.0'
433 Utah Park 41.3’ (185 cfs, 2’ below west overflow) 0.5’ in 1-hr above 37.0’
503 Havana Park 6.8’ (pond overflow depth) 1.0' in 30-min above 4.0'
603 Harvard Gulch Park 24.0’ (600 cfs, <1yr, 2’ over weir, 0.8’ to top of culvert) 1.0' in 30-min above 21.0'
613 Harvard Gulch at Jackson 13.0’ (600 cfs, 1 to 2yr, 4’ depth in channel) 1.0' in 30-min above 11.0'
633 Goldsmith at Temple Pond 62.0’ (500 cfs outflow, 9’ depth, road elev. = 74.6’) 1.0' in 30-min above 55.0'
643 Goldsmith at Eastman 80.5’ (400 cfs, <1yr, 3’ depth 1.0' in 30-min above 79.0'
1403 Upper Sloan Detention 42.0’ (115 cfs outflow, 3’ below spillway 0.5' in 1-hr above 32.0'
1623 Grant Street Detention 57.8' (3.0' below spillway) 0.5' in 1-hr above 51.0
1629 SPR at Dartmouth 4.5’ (2,900 cfs, 5yr) 0.5' in 1-hr above 2.0'
1643 SPR at Union Avenue 14.0’ (1,860 cfs, 2-5yr) 0.5' in 1-hr above 12.0'
1649 SPR at 19th Street 7.0’ (3,120 cfs, 2-5yr, overbank near Union Station) 0.5' in 1-hr above 4.0'
1659 SPR at Henderson 6.0’ (3,800 cfs, 1-yr, overbank flow begins) 0.5' in 1-hr above 3.0'
1673 Powers Park 10.0' and 12.0' (spillway flows begin at 12.0') 0.5' in 1-hr above 5.0
1703 Cherry Creek at Champa 5.5’ (<1,000 cfs, 1yr) 0.5' in 30-min above 4.0'
1723 Cherry Creek at Steele 296.5 (300 cfs, 1.3’ depth, flow over trail) 0.5' in 30-min above 295.5'
1803 Sand Creek Park 2.7’ (380 cfs, flow over trail) 1.0' in 30-min above 0.5'
1813 Sand Creek at mouth 7.0’ (normal w.l. < 4’) 1.0' in 1-hr above 4.0'

Stream gage alarm settings for stations located in Boulder County:
Note: The term "Threshold" in the following table is the stream level that must be exceeded before alarm checking for rate of rise occurs.

I.D. # Station Name Maximum Stage (Discharge/Frequency/Notes) Rate of Rise & Alarm Check Threshold
4373 SBC below Gross Resv. 3.5' (700 cfs) 1.0' in 30-min above 1.0'
4383 Eldorado Springs 3.7' (760 cfs) 1.0' in 30-min above 2.0'
4393 Boulder Falls 5.2' (650 cfs) 1.0' in 30-min above 2.0'
4403 Orodell 4.0' (1,120 cfs) 1.0' in 30-min above 2.5'
4413 Fourmile at Salina 3.7' (300 cfs) 1.0' in 30-min above 2.5'
4423 Bridge 5.0' (825 cfs) 1.0' in 30-min above 3.0'
4433 Rowena 2.2' (200 cfs) 1.0' in 30-min above 1.0'
4443 James Creek 2.5' (200 cfs) 1.0' in 30-min above 1.0'
4453 Lower Lefthand 3.7' (400 cfs) 1.0' in 30-min above 1.5'
4463 SSV at Berry Ridge 3.7' (800 cfs) 1.0' in 30-min above 1.0'
4473 Little Narrows 4.0' / 440 cfs) 1.0' in 30-min above 2.0'
4483 Button Rock Reservoir 6400.5' no rate of rise alarms set
4563 Lyons Diversion NSV No alarms set

...This webpage is under construction and subject to change without notice...

If the station you are looking for is not listed above, send an email request to: alert1@udfcd.org
Webpage last updated: June 16, 2003