Station Overview Station Location
Station Number CO-BO-306 Latitude 40.10444444
Station Name Niwot 0.9 NE Longitude -105.1438889
County Boulder Elevation (ft) 5141



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 12 1.02 0.50 7 0.08 1 0.42 6 2 1 0 0.0 0 0
Nov 12 0.85 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Dec 12 0.58 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Jan 13 0.42 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Feb 13 0.50 0.44 17 0.28 10 0.16 7 2 2 0 0.2 1 1
March 13 1.55 0.20 14 0.09 4 0.11 10 4 1 0 0.0 0 0
April 13 1.85 1.16 26 0.80 15 0.36 11 2 6 0 8.2 2 3
May 13 2.33 1.68 9 0.91 7 0.77 2 1 3 0 0.0 0 0
June 13 1.79 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
July 13 1.32 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Aug 13 1.37 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Sept 13 1.45 9.60 26 0.98 5 8.62 21 7 2 0 0.0 0 0
Water Year Totals: 15.03" 13.58" 99 days 3.14" 42 10.44" 57 days 18 15 days 0 days 8.4" 3 days 4 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
10/1/2012 0.08
10/2/2012
10/3/2012
10/4/2012
10/5/2012
10/6/2012
10/7/2012
10/8/2012
10/9/2012
10/10/2012
10/11/2012
10/12/2012
10/13/2012
10/14/2012 **
10/15/2012 0.15
10/16/2012
10/17/2012
10/18/2012
10/19/2012
10/20/2012
10/21/2012
10/22/2012
10/23/2012
10/24/2012
10/25/2012
10/26/2012 **
10/27/2012 **
10/28/2012 **
10/29/2012 0.27
10/30/2012
10/31/2012
11/1/2012
11/2/2012
11/3/2012
11/4/2012
11/5/2012
11/6/2012
11/7/2012
11/8/2012
11/9/2012
11/10/2012
11/11/2012
11/12/2012
11/13/2012
11/14/2012
11/15/2012
11/16/2012
11/17/2012
11/18/2012
11/19/2012
11/20/2012
11/21/2012
11/22/2012
11/23/2012
11/24/2012
11/25/2012
11/26/2012
11/27/2012
11/28/2012
11/29/2012
11/30/2012
12/1/2012
12/2/2012
12/3/2012
12/4/2012
12/5/2012
12/6/2012
12/7/2012
12/8/2012
12/9/2012
12/10/2012
12/11/2012
12/12/2012
12/13/2012
12/14/2012
12/15/2012
12/16/2012
12/17/2012
12/18/2012
12/19/2012
12/20/2012
12/21/2012
12/22/2012
12/23/2012
12/24/2012
12/25/2012
12/26/2012
12/27/2012
12/28/2012
12/29/2012
12/30/2012
12/31/2012
Day of YearDaily PrcpMultiday Prcp
1/1/2013
1/2/2013
1/3/2013
1/4/2013
1/5/2013
1/6/2013
1/7/2013
1/8/2013
1/9/2013
1/10/2013
1/11/2013
1/12/2013
1/13/2013
1/14/2013
1/15/2013
1/16/2013
1/17/2013
1/18/2013
1/19/2013
1/20/2013
1/21/2013
1/22/2013
1/23/2013
1/24/2013
1/25/2013
1/26/2013
1/27/2013
1/28/2013
1/29/2013
1/30/2013
1/31/2013
2/1/2013 0.00
2/2/2013 0.00
2/3/2013 0.00
2/4/2013 0.00 **
2/5/2013 **
2/6/2013 **
2/7/2013 0.00
2/8/2013
2/9/2013
2/10/2013
2/11/2013
2/12/2013
2/13/2013
2/14/2013 0.00
2/15/2013 M
2/16/2013
2/17/2013
2/18/2013
2/19/2013 0.00
2/20/2013
2/21/2013 0.23
2/22/2013
2/23/2013 **
2/24/2013 **
2/25/2013 0.16
2/26/2013 0.05
2/27/2013 0.00
2/28/2013 0.00
3/1/2013
3/2/2013
3/3/2013
3/4/2013
3/5/2013 0.09
3/6/2013 0.00
3/7/2013
3/8/2013
3/9/2013
3/10/2013
3/11/2013
3/12/2013
3/13/2013
3/14/2013
3/15/2013
3/16/2013
3/17/2013
3/18/2013 0.00
3/19/2013 **
3/20/2013 **
3/21/2013 0.00
3/22/2013 **
3/23/2013 **
3/24/2013 **
3/25/2013 0.11
3/26/2013 0.00
3/27/2013 **
3/28/2013 0.00
3/29/2013
3/30/2013
3/31/2013
Day of YearDaily PrcpMultiday Prcp
4/1/2013 **
4/2/2013 **
4/3/2013 **
4/4/2013 **
4/5/2013 **
4/6/2013 **
4/7/2013 **
4/8/2013 0.26
4/9/2013
4/10/2013 0.08
4/11/2013 0.00
4/12/2013 0.00
4/13/2013 0.00
4/14/2013 0.03
4/15/2013 0.51
4/16/2013 M **
4/17/2013 0.08 0.10
4/18/2013 0.09
4/19/2013 0.00
4/20/2013
4/21/2013
4/22/2013 0.00
4/23/2013
4/24/2013 0.00
4/25/2013 0.01
4/26/2013 0.00
4/27/2013
4/28/2013
4/29/2013 0.00
4/30/2013 0.00 **
5/1/2013 M **
5/2/2013 0.77
5/3/2013 0.00
5/4/2013
5/5/2013 0.00
5/6/2013 0.00
5/7/2013 0.00
5/8/2013 0.14
5/9/2013 0.69
5/10/2013 0.08
5/11/2013
5/12/2013
5/13/2013
5/14/2013
5/15/2013
5/16/2013
5/17/2013
5/18/2013
5/19/2013
5/20/2013
5/21/2013
5/22/2013
5/23/2013
5/24/2013
5/25/2013
5/26/2013
5/27/2013
5/28/2013
5/29/2013
5/30/2013
5/31/2013
6/1/2013
6/2/2013
6/3/2013
6/4/2013
6/5/2013
6/6/2013
6/7/2013
6/8/2013
6/9/2013
6/10/2013
6/11/2013
6/12/2013
6/13/2013
6/14/2013
6/15/2013
6/16/2013
6/17/2013
6/18/2013
6/19/2013
6/20/2013
6/21/2013
6/22/2013
6/23/2013
6/24/2013
6/25/2013
6/26/2013
6/27/2013
6/28/2013
6/29/2013
6/30/2013
Day of YearDaily PrcpMultiday Prcp
7/1/2013
7/2/2013
7/3/2013
7/4/2013
7/5/2013
7/6/2013
7/7/2013
7/8/2013
7/9/2013
7/10/2013
7/11/2013
7/12/2013
7/13/2013
7/14/2013
7/15/2013
7/16/2013
7/17/2013
7/18/2013
7/19/2013
7/20/2013
7/21/2013
7/22/2013
7/23/2013
7/24/2013
7/25/2013
7/26/2013
7/27/2013
7/28/2013
7/29/2013
7/30/2013
7/31/2013
8/1/2013
8/2/2013
8/3/2013
8/4/2013
8/5/2013
8/6/2013
8/7/2013
8/8/2013
8/9/2013
8/10/2013
8/11/2013
8/12/2013
8/13/2013
8/14/2013
8/15/2013
8/16/2013
8/17/2013
8/18/2013
8/19/2013
8/20/2013
8/21/2013
8/22/2013
8/23/2013
8/24/2013
8/25/2013
8/26/2013
8/27/2013
8/28/2013
8/29/2013
8/30/2013
8/31/2013
9/1/2013
9/2/2013
9/3/2013
9/4/2013
9/5/2013 0.00
9/6/2013 0.04
9/7/2013 **
9/8/2013 **
9/9/2013 0.00 0.06
9/10/2013 0.94
9/11/2013 **
9/12/2013 **
9/13/2013 **
9/14/2013 5.87
9/15/2013 **
9/16/2013 **
9/17/2013 1.69
9/18/2013 **
9/19/2013 M 0.14
9/20/2013 **
9/21/2013 **
9/22/2013 **
9/23/2013 M 0.65
9/24/2013
9/25/2013 0.00
9/26/2013 **
9/27/2013 0.02
9/28/2013 **
9/29/2013 **
9/30/2013 0.19



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
10/1/2012 7:00 AM 0.08 M M M M Rain ended around 7:45 this morning
2/1/2013 7:00 AM 0.00 0.0 M M M
2/2/2013 7:00 AM 0.00 0.0 M M M
2/3/2013 7:00 AM 0.00 0.0 M M M
2/4/2013 7:00 AM 0.00 0.0 M M M
2/14/2013 7:00 AM 0.00 0.0 M M M Chilly morning, little wind, clouds.
2/15/2013 7:28 AM M 0.2 M 0.1 M (edit: daily precip initially recorded as 1.00". changed to NA as this appears to be a total snow depth figure. observer contacted. P.G.)
2/19/2013 7:00 AM 0.00 0.0 M M M Cold, wind, cloudy sky.
2/21/2013 7:00 AM 0.23 M M M M It has been snowing since morning. It was about 20 degrees fahrenheit this morning.
2/26/2013 7:00 AM 0.05 M M M M all liquid. Cold overcast day.
2/27/2013 7:00 AM 0.00 0.0 M M M
2/28/2013 7:00 AM 0.00 0.0 M M M No rain or snow melt observed.
3/5/2013 7:00 AM 0.09 M M M M
3/6/2013 7:00 AM 0.00 0.0 M M M
3/18/2013 7:00 AM 0.00 0.0 M M M Clear skies, cool, windy.
3/26/2013 7:00 AM 0.00 0.0 M M M Snow still on ground
4/10/2013 7:00 AM 0.08 1.2 0.80 M M
4/11/2013 7:00 AM 0.00 0.0 M M M
4/12/2013 9:20 AM 0.00 0.0 M M M noticed one drop on side of container
4/13/2013 7:30 AM 0.00 0.0 M M M
4/14/2013 7:00 AM 0.03 M M M M
4/15/2013 1:00 PM 0.51 7.0 0.51 0.7 M Heavy Snow accumulated
4/16/2013 11:10 AM M M M 8.0 M Saw drops inside of guage (edit: all measurements except depth of total snow and ice changed from 0.00" to NA. observer will be contacted. P.G.)
4/17/2013 7:15 AM 0.08 M M M M (edit: daily precip initially recorded as 0.80". changed to NA due to decimal error suspicion. P.G.)
4/18/2013 9:00 AM 0.09 M M 4.0 M (0.90" to 0.09". P.G.)
4/19/2013 8:10 AM 0.00 0.0 M M M the gage was empty and snow was melting all around
4/22/2013 9:00 AM 0.00 0.0 M M M Overcast, grey skies. It is 48 degrees and we are expecting snow at any time after 9:00 AM.
4/24/2013 7:00 AM 0.00 0.0 M M M Cold
4/25/2013 7:27 AM 0.01 M M M M May, or may not precipitate over the day.
4/26/2013 7:00 AM 0.00 0.0 M M M
4/29/2013 1:45 PM 0.00 0.0 M M M No new precipitation to report due to sunny weather.
4/30/2013 7:00 AM 0.00 0.0 M M M
5/1/2013 1:30 PM M M M M M a fly was found in the beaker (edit: daily precip initially recorded as 4.60". changed to NA due to inconsistency with nearby data. observer will be contacted. P.G.)
5/3/2013 7:40 AM 0.00 0.0 M M M it seemed to have been dry for a while even though it snowed quit hard a while back ( in the last 3 days
5/5/2013 7:40 AM 0.00 0.0 M M M
5/6/2013 7:00 AM 0.00 0.0 M M M
5/7/2013 7:30 AM 0.00 0.0 M M M it was dry all around
5/8/2013 8:00 AM 0.14 M M M M There was a dead fly in the rain gauge.
5/9/2013 7:15 AM 0.69 M M M M Been raining all night, and started around five PM yesterday.
5/10/2013 7:15 AM 0.08 M M M M Been raining off and on around noon yesterday, and stopped for about rest of the day.
9/5/2013 7:00 AM 0.00 0.0 M M M cloudy but no precipitation
9/6/2013 7:15 AM 0.04 M M M M It was hot out but must have rained last night
9/9/2013 7:00 AM 0.00 0.0 M M M
9/10/2013 7:00 AM 0.94 M M M M It was cloudy and there was lightning.
9/19/2013 7:00 AM M 0.0 M M M Dark clouds in the air and thunder and lightning but no precipitation (edit: daily precip initially recorded as 0.00". changed to NA due to inconsistency with nearby data. observer will be contacted. P.G.)
9/23/2013 7:00 AM M 0.0 M M M (edit: daily precip initially recorded as 0.00". changed to NA due to inconsistency with nearby data. observer will be contacted. P.G.)
9/25/2013 7:30 AM 0.00 0.0 M M M Traces



Start Date End Date & Time Duration in Days Precipitation Snow Depth Snow Depth SWE Notes
10/14/2012 10/15/2012 12:00 AM 2 0.15 0.0 0.00 It was cool and raining on Friday night
10/26/2012 10/29/2012 8:30 AM 4 0.27 M M This was recorded for the weekend.
2/4/2013 2/07/2013 12:00 AM 4 0.00 M M Cold, windy
2/23/2013 2/25/2013 7:00 AM 3 0.16 7.0 0.16 This blizzard started late Saturday night and contniued thoughout most of Sunday. Today skies are clear
3/19/2013 3/20/2013 7:00 AM 2 0.00 M M Cool clear and dry
3/20/2013 3/21/2013 7:00 AM 2 0.00 0.0 M clear sunny cool -Kenny
3/22/2013 3/25/2013 1:10 PM 4 0.11 8.0 0.11 The snow storm started on Friday March 22nd, it continued through out the next day for quite some time, it eventually died down but their were also light snow showers the rest of the day
3/27/2013 3/28/2013 7:00 AM 2 0.00 M M
4/1/2013 4/08/2013 7:30 AM 8 0.26 M M Spring break rain
4/16/2013 4/17/2013 12:00 PM 2 0.10 7.5 0.10 Their was no water in the plastic tube, their was .10 inches of snow in the tube. The snow storm started around midnight and has yet to let up, it has actually became stronger and doesn't seem to be stoping any time soon.
4/30/2013 5/02/2013 12:04 PM 3 0.77 1.0 M Some snow has melted from the total depth of the snow on the ground
9/7/2013 9/09/2013 7:00 AM 3 0.06 M M There was a fly in the catcher
9/11/2013 9/14/2013 4:30 PM 4 5.87 M M The rain gauge was inaccessible due to flooding until today.There was a fly in the gauge. Our inner cylinder id cracked and will not support levels above 9.46
9/15/2013 9/17/2013 7:48 AM 3 1.69 M M Bugs in rain gauge. Cloudy with early morning thunder and lightening. **For flood mapping purposes, ending this report on 9/17 and making a new one for 9/18-19. Based off area gauge totals, the average precip for 18-19 was 0.14 ... taking that off and making it's own multi-day report. CSPEARS
9/18/2013 9/19/2013 7:48 AM 2 0.14 M M **For flood mapping purposes, ending previous multi report on 9/17 and making a new one for 9/18-19. Based off area gauge totals, the average precip for 18-19 was 0.14 CSPEARS
9/20/2013 9/23/2013 7:00 AM 4 0.65 M M Clear Saturday. Cloudy Sunday
9/26/2013 9/27/2013 7:20 AM 2 0.02 0.0 0.02 Traces all throughout the gage. Cloudy. Everything is very wet. Sprinkling outside.
9/28/2013 9/30/2013 12:00 AM 3 0.19 M M Bug in the water and it's cloudy outside.



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