The Community Collaborative Rain, Hail and Snow Network (CoCoRaHS) is “a grassroots volunteer network of backyard weather observers” who report precipitation totals. The table shows rain totals for May 10-11 as the data is shown at 3 p.m. The location is the CoCoRaHS station number — in cases where there are multiple stations for a municipality, the highest total was used.
| Location | Inches of rain |
| Adena 3.9 SW | 1.64 |
| Arapahoe 8.4 NNE | 1.4 |
| Arvada 0.7 NNE | 1.03 | Aurora 12.4 SSE | 1.56 |
| Bennett 10.8 SSW | 1.74 |
| Berthoud 1.1 ESE | 2.1 |
| Black Forest 5.4 SW | 2.63 |
| Boulder 5.4 ESE | .88 |
| Brighton 4.0 WNW | .95 |
| Broomfield 1.8 SE | .98 |
| Brush 0.3 E | 2.52 |
| Byers 0.1 N | 1.55 |
| Castle Pines 2.8 ENE | 1.87 |
| Castle Rock 6.5 NNW | 2.25 |
| Centennial 3.9 W | 1.37 |
| Cherry Creek Reservoir 1.9 N | 1.49 |
| Cheyenne Wells 0.2 E | 1.4 |
| Colorado Springs 10.1 NNE | 2.65 |
| Conifer 2.9 S | 1.38 |
| Cripple Creek 5.1 NW | 1.54 |
| Deermont 1.2 ENE | 1.98 |
| Denver 4.3 WNW | 1.46 |
| Eads 12 ESE | 1.8 |
| Eaton 1.8 SE | 1.6 |
| Elbert 3.7 W | 1.87 |
| Elizabeth 10.5 NNE | 1.89 |
| Englewood 1.4 N | .99 |
| Erie 1.1 NNW | 1.62 |
| Evans 0.6 W | 1.48 |
| Evergreen 5.3 S | 1.38 |
| Falcon 3.2 W | 2 |
| Firestone 2.5 N | 2.09 |
| Fort Collins 8.6 N | 1.33 |
| Fort Lupton 0.1 SW | 2.26 |
| Fort Morgan 0.4 SW | 1.71 |
| Franktown 2.1 ENE | 1.82 |
| Frederick 2.0 NW | 2.41 |
| Galeton 1.6 E | 2.33 |
| Gleneagle 4.5 SE | 2.1 |
| Greeley 0.8 NW | 2.28 |
| Greenwood Village 2.1 NE | 1.51 |
| Guffey 5.5 W | 1.47 |
| Highlands Ranch 3.2 ESE | 1.68 |
| Horsetooth Mountain 3.2 NNW | 1.48 |
| Idalia 0.5 NE | 1.59 |
| Ivywild 0.6 E | 1.83 |
| Ken Caryl 0.6 WSW | 1.5 |
| Kersey 1.3 WSW | 2.53 |
| Kiowa 3.9 S | 1.86 |
| Kit Carson 0.3 N | 1.75 |
| Lakewood 1.2 E | 1.33 |
| Liberty 15 SW | 1.64 |
| Littleton 4.5 WSW | 1.66 |
| Lone Tree 0.6 SSE | 2 |
| Longmont 4.3 SW | 1.68 |
| Manitou Springs 1.2 ESE | 2.27 |
| Milliken 1.3 WSW | 2.34 |
| Monument 1.4 NE | 2.22 |
| Palmer Lake 0.3 W | 2.39 |
| Parker 2.1 WNW | 1.7 |
| Penrose 1.2 ESE | 1.55 |
| Peyton 5.4 NNW | 2.1 |
| Pikeview 3.7 NE | 1.78 |
| Pueblo West 2.2 NNE | 2.22 |
| Purcell 9.0 NNE | 1.39 |
| Sedalia 4.1 SW | 1.62 |
| Snyder 7.5 NNW | 1.66 |
| Sterling 2.8 SSW | 1.51 |
| Strasburg 11.4 SSW | 1.45 |
| Surrey Ridge 0.2 SSW | 1.72 |
| The Pinery 1.2 ESE | 1.46 |
| Thornton 2.1 N | 1.23 |
| Watkins 7.2 SSE | 1.59 |
| Westminster 4.2 SSE | 1.09 |
| Wiley 0.3 S | 1.44 |
| Woodland Park 2.0 N | 2.11 |
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