Station Overview Station Location
Station Number CO-GL-10 Latitude 39.8382
Station Name Black Hawk 2.9 NNE Longitude -105.4783
County Gilpin Elevation (ft) 9265



Month 30 Yr Avg by PRISM Total Prcp Sum Days Covered By All Observations Daily Prcp Sum Daily Observation Count Multiday Prcp Sum Days Covered by Multiday Observations Multiday Observation Count Days With Prcp Days With Trace Total Snowfall Days With Snowfall Days With Snow On Ground
Oct 10 1.49 1.20 32 1.08 12 0.12 20 5 6 1 0.0 0 0
Nov 10 1.38 0.35 29 0.27 13 0.08 16 6 3 0 4.3 2 0
Dec 10 1.21 0.12 28 0.12 14 0.00 14 4 2 3 0.5 1 0
Jan 11 0.99 6.70 29 0.60 13 6.10 16 4 2 1 5.0 1 0
Feb 11 0.93 6.30 28 0.40 13 5.90 15 5 4 0 5.5 4 0
March 11 2.18 0.63 19 0.51 13 0.12 6 2 3 1 5.1 3 0
April 11 2.86 1.51 22 0.96 11 0.55 11 3 2 2 23.0 2 0
May 11 2.50 2.89 30 1.06 8 1.83 22 5 2 1 11.0 2 0
June 11 2.35 1.28 23 0.02 16 1.26 7 3 1 0 0.0 0 0
July 11 2.54 3.73 24 3.11 16 0.62 8 2 13 1 0.0 0 0
Aug 11 2.76 0.72 26 0.49 14 0.23 12 5 5 0 0.0 0 0
Sept 11 1.79 1.36 21 1.36 18 0.00 3 1 5 0 0.0 0 0
Water Year Totals: 22.98" 26.79" 311 days 9.98" 161 16.81" 150 days 45 48 days 10 days 54.4" 15 days 0 days



Days in Water Year Cell Color Key
        Daily Observation with Prcp         Missing Day
        Multiday Observation         Daily/Multiday Observation Conflict

Day of Year Daily Prcp Multiday Prcp
10/1/2010 **
10/2/2010 **
10/3/2010 **
10/4/2010 0.00
10/5/2010 T
10/6/2010 0.00
10/7/2010 0.02
10/8/2010 0.00 **
10/9/2010 **
10/10/2010 **
10/11/2010 0.00
10/12/2010 0.35
10/13/2010 **
10/14/2010 **
10/15/2010 0.00
10/16/2010 **
10/17/2010 **
10/18/2010 **
10/19/2010 **
10/20/2010 0.12
10/21/2010 0.00
10/22/2010 0.03
10/23/2010 **
10/24/2010 0.00
10/25/2010 0.42
10/26/2010 0.22
10/27/2010 0.04
10/28/2010 0.00
10/29/2010 0.00
10/30/2010 **
10/31/2010 **
11/1/2010 T
11/2/2010 0.00
11/3/2010 0.00
11/4/2010 0.00
11/5/2010 0.00
11/6/2010 **
11/7/2010 **
11/8/2010 0.00
11/9/2010 0.00
11/10/2010
11/11/2010 **
11/12/2010 0.05
11/13/2010 **
11/14/2010 **
11/15/2010 0.03
11/16/2010 0.00
11/17/2010 0.10
11/18/2010 0.00
11/19/2010 0.00
11/20/2010 **
11/21/2010 0.00
11/22/2010 0.14
11/23/2010 0.00
11/24/2010 0.03
11/25/2010 **
11/26/2010 **
11/27/2010 **
11/28/2010 **
11/29/2010 T
11/30/2010 0.00
12/1/2010 0.00
12/2/2010 T
12/3/2010 0.00
12/4/2010 **
12/5/2010 **
12/6/2010 T
12/7/2010 0.01
12/8/2010 0.00
12/9/2010 0.00
12/10/2010 0.00
12/11/2010 **
12/12/2010 **
12/13/2010 T
12/14/2010 0.00
12/15/2010
12/16/2010 T
12/17/2010
12/18/2010 **
12/19/2010 **
12/20/2010 T
12/21/2010 0.11
12/22/2010 0.00
12/23/2010 0.00
12/24/2010 **
12/25/2010 **
12/26/2010 **
12/27/2010 0.00
12/28/2010 0.00
12/29/2010
12/30/2010 T
12/31/2010 **
Day of YearDaily PrcpMultiday Prcp
1/1/2011 **
1/2/2011 **
1/3/2011 0.10
1/4/2011 0.00
1/5/2011 0.00
1/6/2011 **
1/7/2011 **
1/8/2011 **
1/9/2011 0.00
1/10/2011 0.20
1/11/2011 0.00
1/12/2011 0.00
1/13/2011 0.00
1/14/2011 0.00
1/15/2011 **
1/16/2011 **
1/17/2011 **
1/18/2011 **
1/19/2011 6.00
1/20/2011 0.00
1/21/2011 0.00
1/22/2011
1/23/2011
1/24/2011 0.40
1/25/2011 0.00
1/26/2011 T
1/27/2011 0.00
1/28/2011 **
1/29/2011 **
1/30/2011 **
1/31/2011 0.00
2/1/2011 0.10
2/2/2011 0.00
2/3/2011 0.00
2/4/2011 0.20
2/5/2011 **
2/6/2011 **
2/7/2011 **
2/8/2011 5.40
2/9/2011 0.00
2/10/2011 0.00
2/11/2011 0.00
2/12/2011 **
2/13/2011 **
2/14/2011 0.00
2/15/2011 0.00
2/16/2011 0.00
2/17/2011 **
2/18/2011 0.00
2/19/2011 **
2/20/2011 **
2/21/2011 **
2/22/2011 0.50
2/23/2011 0.00
2/24/2011 0.03
2/25/2011 0.07
2/26/2011 **
2/27/2011 0.00
2/28/2011 0.00
3/1/2011 0.00
3/2/2011 0.00
3/3/2011 0.00
3/4/2011 0.00
3/5/2011 0.00
3/6/2011 0.00
3/7/2011 0.10
3/8/2011 0.01
3/9/2011 T
3/10/2011 0.40
3/11/2011
3/12/2011
3/13/2011
3/14/2011
3/15/2011
3/16/2011 0.00
3/17/2011
3/18/2011
3/19/2011 **
3/20/2011 **
3/21/2011 0.00
3/22/2011
3/23/2011
3/24/2011 0.00
3/25/2011
3/26/2011 **
3/27/2011 **
3/28/2011 0.12
3/29/2011
3/30/2011
3/31/2011 0.00
Day of YearDaily PrcpMultiday Prcp
4/1/2011 0.00
4/2/2011
4/3/2011
4/4/2011
4/5/2011 0.00
4/6/2011 0.00
4/7/2011 T
4/8/2011 0.00
4/9/2011 **
4/10/2011 **
4/11/2011 0.00
4/12/2011
4/13/2011 0.00
4/14/2011 0.86
4/15/2011 **
4/16/2011 **
4/17/2011 **
4/18/2011 0.00
4/19/2011 0.10
4/20/2011 T
4/21/2011
4/22/2011
4/23/2011 **
4/24/2011 **
4/25/2011 0.55
4/26/2011
4/27/2011 0.00
4/28/2011
4/29/2011 0.00
4/30/2011 **
5/1/2011 T
5/2/2011 T
5/3/2011 0.00
5/4/2011 0.00
5/5/2011 0.00
5/6/2011
5/7/2011 **
5/8/2011 **
5/9/2011 0.00
5/10/2011 0.00
5/11/2011 **
5/12/2011 **
5/13/2011 **
5/14/2011 **
5/15/2011 **
5/16/2011 **
5/17/2011 **
5/18/2011 1.83
5/19/2011 0.51
5/20/2011 0.55
5/21/2011 **
5/22/2011 **
5/23/2011 0.00
5/24/2011 **
5/25/2011 **
5/26/2011 0.00
5/27/2011 0.00
5/28/2011 **
5/29/2011 **
5/30/2011 **
5/31/2011 **
6/1/2011 0.00
6/2/2011 0.00
6/3/2011 0.00
6/4/2011 **
6/5/2011 **
6/6/2011 0.00
6/7/2011
6/8/2011 0.00
6/9/2011
6/10/2011
6/11/2011
6/12/2011
6/13/2011
6/14/2011
6/15/2011 0.00
6/16/2011 0.00
6/17/2011 0.00
6/18/2011 **
6/19/2011 **
6/20/2011 1.26
6/21/2011 0.02
6/22/2011 0.00
6/23/2011 0.00
6/24/2011 0.00
6/25/2011 0.00
6/26/2011 0.00
6/27/2011 0.00
6/28/2011 0.00
6/29/2011 0.00
6/30/2011 0.00
Day of YearDaily PrcpMultiday Prcp
7/1/2011 T
7/2/2011
7/3/2011
7/4/2011
7/5/2011
7/6/2011 0.08
7/7/2011 0.00
7/8/2011 0.82
7/9/2011 **
7/10/2011 **
7/11/2011 0.62
7/12/2011 0.56
7/13/2011 0.16
7/14/2011 0.03
7/15/2011 0.28
7/16/2011
7/17/2011
7/18/2011 0.04
7/19/2011 0.02
7/20/2011 0.18
7/21/2011 0.03
7/22/2011
7/23/2011 **
7/24/2011 **
7/25/2011 0.00
7/26/2011 0.00
7/27/2011 0.10
7/28/2011 0.72
7/29/2011 0.09
7/30/2011 **
7/31/2011 **
8/1/2011 T
8/2/2011 0.00
8/3/2011 0.02 **
8/4/2011 0.02
8/5/2011 0.05
8/6/2011 **
8/7/2011 **
8/8/2011 0.00
8/9/2011
8/10/2011 0.00
8/11/2011 0.00
8/12/2011 0.00
8/13/2011 **
8/14/2011 **
8/15/2011 0.12
8/16/2011 0.00
8/17/2011
8/18/2011 0.00
8/19/2011 0.00
8/20/2011 0.23 **
8/21/2011 **
8/22/2011 0.09
8/23/2011 0.00
8/24/2011 0.00
8/25/2011
8/26/2011 0.12
8/27/2011
8/28/2011
8/29/2011 0.07
8/30/2011
8/31/2011
9/1/2011 0.04
9/2/2011
9/3/2011
9/4/2011 0.00
9/5/2011 0.00
9/6/2011 0.00
9/7/2011 0.38
9/8/2011 0.39
9/9/2011
9/10/2011
9/11/2011
9/12/2011
9/13/2011 0.00
9/14/2011 0.00
9/15/2011 0.52
9/16/2011 0.03
9/17/2011
9/18/2011
9/19/2011 0.00
9/20/2011
9/21/2011 0.00
9/22/2011 0.00
9/23/2011 0.00
9/24/2011 **
9/25/2011 **
9/26/2011 0.00
9/27/2011 0.00
9/28/2011 0.00
9/29/2011 0.00
9/30/2011 0.00



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
10/5/2010 8:30 AM T M M M M
10/6/2010 8:30 AM 0.00 0.0 M M M
10/7/2010 8:30 AM 0.02 M M M M
10/8/2010 8:30 AM 0.00 0.0 M M M
10/12/2010 8:30 AM 0.35 M M M M
10/21/2010 8:30 AM 0.00 0.0 M M M
10/22/2010 8:30 AM 0.03 M M M M
10/25/2010 8:30 AM 0.42 M M M M
10/26/2010 8:30 AM 0.22 M M M M High winds made snow "sideways", therefore measured less than actual.
10/27/2010 7:00 AM 0.04 M M M M
10/28/2010 8:00 AM 0.00 0.0 M M M
10/29/2010 8:30 AM 0.00 0.0 M M M
11/2/2010 8:30 AM 0.00 0.0 M M M
11/3/2010 8:30 AM 0.00 0.0 M M M
11/4/2010 8:30 AM 0.00 0.0 M M M
11/5/2010 8:30 AM 0.00 0.0 M M M
11/9/2010 8:30 AM 0.00 0.0 M M M
11/16/2010 8:30 AM 0.00 0.0 M M M
11/17/2010 8:30 AM 0.10 M M M M No measurable snow-high winds blew snow away.
11/18/2010 8:30 AM 0.00 0.0 M M M
11/19/2010 8:30 AM 0.00 0.0 M M M
11/22/2010 7:00 AM 0.14 2.8 M M M
11/23/2010 8:30 AM 0.00 0.0 M M M
11/24/2010 8:30 AM 0.03 1.5 M M M
11/30/2010 8:30 AM 0.00 0.0 M M M
12/1/2010 8:30 AM 0.00 0.0 M M M
12/2/2010 8:00 AM T M M M M
12/3/2010 8:00 AM 0.00 0.0 M M M
12/7/2010 8:30 AM 0.01 T M M M
12/8/2010 8:30 AM 0.00 0.0 M M M
12/9/2010 8:30 AM 0.00 0.0 M M M
12/10/2010 8:30 AM 0.00 0.0 M M M
12/14/2010 8:30 AM 0.00 0.0 M M M
12/16/2010 8:30 AM T T M M M
12/21/2010 8:30 AM 0.11 0.5 M M M
12/22/2010 8:30 AM 0.00 0.0 M M M
12/23/2010 8:30 AM 0.00 0.0 M M M
12/28/2010 8:30 AM 0.00 0.0 M M M
12/30/2010 8:30 AM T T M M M
1/4/2011 8:30 AM 0.00 0.0 M M M
1/5/2011 8:30 AM 0.00 0.0 M M M
1/10/2011 8:00 AM 0.20 5.0 M M M
1/11/2011 7:00 AM 0.00 0.0 M M M
1/12/2011 8:30 AM 0.00 0.0 M M M
1/13/2011 8:30 AM 0.00 0.0 M M M
1/14/2011 8:30 AM 0.00 0.0 M M M
1/20/2011 8:30 AM 0.00 0.0 M M M
1/21/2011 8:30 AM 0.00 0.0 M M M
1/24/2011 8:30 AM 0.40 M M M M Accumulated snow not available due to high winds. Melted snow inaccurate for same reason.
1/25/2011 8:30 AM 0.00 0.0 M M M
1/26/2011 8:30 AM T M M M M
1/27/2011 8:30 AM 0.00 0.0 M M M
2/1/2011 8:30 AM 0.10 1.5 M M M
2/2/2011 8:30 AM 0.00 0.0 M M M
2/3/2011 8:30 AM 0.00 0.0 M M M
2/4/2011 8:30 AM 0.20 2.0 M M M
2/9/2011 8:30 AM 0.00 0.0 M M M
2/10/2011 8:30 AM 0.00 0.0 M M M
2/11/2011 8:30 AM 0.00 0.0 M M M
2/15/2011 8:30 AM 0.00 0.0 M M M
2/16/2011 8:30 AM 0.00 0.0 M M M
2/23/2011 8:30 AM 0.00 0.0 M M M
2/24/2011 8:30 AM 0.03 0.5 M M M
2/25/2011 7:00 AM 0.07 1.5 M M M
2/28/2011 8:30 AM 0.00 0.0 M M M
3/1/2011 8:30 AM 0.00 0.0 M M M
3/2/2011 8:30 AM 0.00 0.0 M M M
3/3/2011 8:30 AM 0.00 0.0 M M M
3/4/2011 8:30 AM 0.00 0.0 M M M
3/5/2011 8:30 AM 0.00 0.0 M M M
3/6/2011 8:30 AM 0.00 0.0 M M M
3/7/2011 8:30 AM 0.10 1.5 M M M
3/8/2011 8:30 AM 0.01 T M M M
3/9/2011 8:30 AM T 0.1 M M M
3/10/2011 8:30 AM 0.40 3.5 M M M
3/16/2011 8:30 AM 0.00 0.0 M M M
3/24/2011 8:30 AM 0.00 0.0 M M M
3/31/2011 8:30 AM 0.00 0.0 M M M
4/1/2011 8:30 AM 0.00 0.0 M M M
4/5/2011 8:30 AM 0.00 0.0 M M M
4/6/2011 8:30 AM 0.00 0.0 M M M
4/7/2011 8:30 AM T T M M M
4/8/2011 8:30 AM 0.00 0.0 M M M
4/13/2011 8:30 AM 0.00 0.0 M M M
4/14/2011 4:00 PM 0.86 21.5 M M M
4/19/2011 7:00 AM 0.10 1.5 M M M
4/20/2011 8:30 AM T T M M M
4/27/2011 8:30 AM 0.00 0.0 M M M
4/29/2011 8:30 AM 0.00 0.0 M M M
5/2/2011 8:30 AM T T M M M
5/3/2011 8:30 AM 0.00 0.0 M M M
5/4/2011 8:30 AM 0.00 0.0 M M M
5/5/2011 8:30 AM 0.00 0.0 M M M
5/10/2011 8:30 AM 0.00 0.0 M M M
5/19/2011 7:00 AM 0.51 6.0 M M M
5/20/2011 8:30 AM 0.55 5.0 M M M
5/27/2011 8:30 AM 0.00 0.0 M M M
6/2/2011 7:00 AM 0.00 0.0 M M M
6/3/2011 7:00 AM 0.00 0.0 M M M
6/8/2011 8:30 AM 0.00 0.0 M M M
6/15/2011 8:30 AM 0.00 0.0 M M M
6/16/2011 7:00 AM 0.00 0.0 M M M
6/17/2011 7:00 AM 0.00 0.0 M M M
6/21/2011 8:30 AM 0.02 M M M M
6/22/2011 7:00 AM 0.00 0.0 M M M
6/23/2011 8:30 AM 0.00 0.0 M M M
6/24/2011 7:00 AM 0.00 0.0 M M M
6/25/2011 7:00 AM 0.00 0.0 M M M
6/26/2011 7:00 AM 0.00 0.0 M M M
6/27/2011 7:00 AM 0.00 0.0 M M M
6/28/2011 7:00 AM 0.00 0.0 M M M
6/29/2011 7:00 AM 0.00 0.0 M M M
6/30/2011 8:30 AM 0.00 0.0 M M M
7/1/2011 8:30 AM T M M M M
7/6/2011 8:30 AM 0.08 M M M M
7/7/2011 8:30 AM 0.00 0.0 M M M
7/8/2011 7:00 AM 0.82 M M M M
7/12/2011 8:30 AM 0.56 M M M M
7/13/2011 8:30 AM 0.16 M M M M
7/14/2011 8:30 AM 0.03 M M M M
7/15/2011 8:30 AM 0.28 M M M M
7/18/2011 8:30 AM 0.04 M M M M
7/19/2011 8:30 AM 0.02 M M M M
7/20/2011 8:30 AM 0.18 M M M M
7/21/2011 8:30 AM 0.03 M M M M
7/26/2011 8:30 AM 0.00 0.0 M M M
7/27/2011 8:30 AM 0.10 M M M M
7/28/2011 8:30 AM 0.72 M M M M
7/29/2011 8:30 AM 0.09 M M M M
8/2/2011 8:30 AM 0.00 0.0 M M M
8/3/2011 8:30 AM 0.02 M M M M
8/5/2011 8:30 AM 0.05 M M M M
8/10/2011 8:30 AM 0.00 0.0 M M M
8/11/2011 8:30 AM 0.00 0.0 M M M
8/12/2011 8:30 AM 0.00 0.0 M M M
8/16/2011 8:30 AM 0.00 0.0 M M M
8/18/2011 8:30 AM 0.00 0.0 M M M
8/19/2011 8:30 AM 0.00 0.0 M M M
8/20/2011 7:00 AM 0.23 M M M M
8/23/2011 8:30 AM 0.00 0.0 M M M
8/24/2011 8:30 AM 0.00 0.0 M M M
8/26/2011 8:00 AM 0.12 M M M M
8/29/2011 8:00 AM 0.07 M M M M
9/1/2011 8:00 AM 0.04 M M M M
9/4/2011 7:00 AM 0.00 0.0 M M M
9/5/2011 7:00 AM 0.00 0.0 M M M
9/6/2011 8:00 AM 0.00 0.0 M M M
9/7/2011 8:00 AM 0.38 M M M M
9/8/2011 8:00 AM 0.39 M M M M
9/13/2011 7:00 AM 0.00 0.0 M M M
9/14/2011 7:00 AM 0.00 0.0 M M M
9/15/2011 8:00 AM 0.52 M M M M
9/16/2011 7:00 AM 0.03 M M M M
9/19/2011 7:00 AM 0.00 0.0 M M M
9/21/2011 8:30 AM 0.00 0.0 M M M
9/22/2011 8:30 AM 0.00 0.0 M M M
9/23/2011 8:30 AM 0.00 0.0 M M M
9/27/2011 8:30 AM 0.00 0.0 M M M
9/28/2011 8:30 AM 0.00 0.0 M M M
9/29/2011 8:30 AM 0.00 0.0 M M M
9/30/2011 8:30 AM 0.00 0.0 M M M



Start Date End Date & Time Duration in Days Precipitation Snow Depth Snow Depth SWE Notes
10/1/2010 10/04/2010 8:30 AM 4 0.00 M M
10/8/2010 10/11/2010 12:00 AM 4 0.00 M M
10/13/2010 10/15/2010 8:30 AM 3 0.00 M M
10/16/2010 10/20/2010 8:30 AM 5 0.12 M M
10/23/2010 10/24/2010 8:30 AM 2 0.00 M M
10/30/2010 11/01/2010 8:30 AM 3 T M M
11/6/2010 11/08/2010 8:30 AM 3 0.00 M M
11/11/2010 11/12/2010 8:30 AM 2 0.05 M M
11/13/2010 11/15/2010 8:30 AM 3 0.03 M M
11/20/2010 11/21/2010 12:00 AM 2 0.00 M M
11/25/2010 11/29/2010 8:30 AM 5 T M M Extended time period due to holiday closure.
12/4/2010 12/06/2010 8:30 AM 3 T M M
12/11/2010 12/13/2010 8:30 AM 3 T M M Some snow, lots of wind. Guage did not have any accumulation.
12/18/2010 12/20/2010 8:30 AM 3 T T M
12/24/2010 12/27/2010 12:00 AM 4 0.00 M M
12/31/2010 1/03/2011 8:30 AM 4 0.10 4.2 M
1/6/2011 1/09/2011 9:00 AM 4 0.00 0.0 M
1/15/2011 1/19/2011 6:00 AM 5 6.00 M M Absent/closed.Unknown actual amounts-not recorded daily-did receive snow.
1/28/2011 1/31/2011 12:00 AM 4 0.00 M M
2/5/2011 2/08/2011 8:30 AM 4 5.40 M M Accurate depth of snow not available due to strong winds.
2/12/2011 2/14/2011 8:30 AM 3 0.00 M M
2/17/2011 2/18/2011 8:30 AM 2 0.00 M M
2/19/2011 2/22/2011 8:30 AM 4 0.50 2.0 M
2/26/2011 2/27/2011 8:30 PM 2 0.00 M M
3/19/2011 3/21/2011 8:30 AM 3 0.00 M M
3/26/2011 3/28/2011 8:30 AM 3 0.12 6.0 M
4/9/2011 4/11/2011 8:30 AM 3 0.00 M M
4/15/2011 4/18/2011 8:30 AM 4 0.00 M M
4/23/2011 4/25/2011 8:30 AM 3 0.55 9.0 M
4/30/2011 5/01/2011 8:30 AM 2 T T M
5/7/2011 5/09/2011 8:30 AM 3 0.00 M M
5/11/2011 5/18/2011 8:30 AM 8 1.83 M M (edit: 5/11-5/18 precip initially recorded as 18.30". changed to 1.83 to agree with surrounding stations. P.G.)
5/21/2011 5/23/2011 8:30 AM 3 0.00 0.0 M
5/24/2011 5/26/2011 8:30 AM 3 0.00 M M
5/28/2011 6/01/2011 8:30 AM 5 0.00 M M
6/4/2011 6/06/2011 8:30 AM 3 0.00 M M
6/18/2011 6/20/2011 8:30 AM 3 1.26 0.5 M
7/9/2011 7/11/2011 8:30 AM 3 0.62 M M
7/23/2011 7/25/2011 8:30 AM 3 0.00 M M
7/30/2011 8/01/2011 8:30 AM 3 T M M
8/3/2011 8/04/2011 8:30 AM 2 0.02 M M
8/6/2011 8/08/2011 8:30 AM 3 0.00 M M
8/13/2011 8/15/2011 8:30 AM 3 0.12 M M
8/20/2011 8/22/2011 8:30 AM 3 0.09 M M
9/24/2011 9/26/2011 8:30 AM 3 0.00 M M



Observation Date Observation Time Notes Largest Stone Size Average Stone Size Smallest Stone Size Stone Consistency Duration Minutes Durration Accuracy Damage Timing More Rain than Hail Hail Started Largest Hail Started Angle of Impact Number of Stones on Pad Distance Between Stones on Pad Depth of Stones on Ground