DWR_3193699

• Document Date: 12/21/2017
• Document Type - Dam Safety: Report
• Division: 5
• Dam ID: 530212
• Subject: COPPER SPUR DAM - SPILLWAY ADEQUACY ANALYSES
• DWR Send/Recipient: JACKIE BLUMBERG, ALAN MARTELLARO

NOAA Atlas 14, Volume 6, Version 2
Location name: Toponas, Colorado, USA''
Latitude: 39.9663°, Longitude: -106.6409°
r Elevation: 9130.16 it"* }
'source: ESRI Maps A
^ source: USGS '• ""�
POINT PRECIPITATION FREQUENCY ESTIMATES
Sanja Perics, Deborah Marlin, Sandra Pavlovic, Ishan! Roy, Michael St. Laurent, Carl Trypaluk Dale
Unruh, Michael Yelda, Geotrery Bonnin
NOAH, National Weather Service, Silver Spring, Maryland
PF tabular I PF graphical I Maps & aerials
PF tabular
PDS -based point precipitation frequency estimates with 90% confidence intervals (in inches)1
Average recurrence interval (years)
Duration
1
����
2
5
10
25
50
100
200
500
1000
F(0.-104.-1-82-376
F0-.407.5-07-9975)0.458-0932
5 -min
0.087-0.1144
0.27-0387
0.2948.498
0.364-0.667
0.489-1.08
0.530.726
0.568-839
10 -min
0.127 -0.210)11(0.207-0.345)11(0.333-0.558)11(0.430-0.729)70.5337
0.67047776
0.670-7137
0.7761.58
0.761.84
0.82732.04
15 -min
0.755-0 2561(0.253-0.421)11(0.406-0.680)
0.525-0.889
0.6498.19
0.744-73.42
0.817-1.67
0.874-1.92
0.946-2.24
1.00 2849
30 -min
2.38
9.64
0.285-0 357
0.388-0.529
0.481-0 805
0.610-8703
0.752
0.859
0.946-5.3
1.0224
1.112264)
(1.18 -2.94
0.383
0.493
0.704
0.877
1.11
7.29
7.47
1.84
1.86
2.05
60 -min
I(O.282-0.469)11(0.383-0.637)11(0.545-0.913)11(0.675-1.14)1l(O.823-1.51)11(0.935-1.79)11
(1.03-2.10)11(l.11-2.44)
(1.21-2.88)
(1.30-3.22)
0.449
0.5n
0.787
0.962
1.20
1.39
1.58
1.77
2.03
2.22
z -hr
(0.352-0.574)
(0.452-0.739)
(0.615-1.01)
(0.747-1.24)
(0.903-1.62)
(1.02-1.91) 11
(1.12-2.24)
(1.212.60)
(1.333.09)
(1.423.46)
0.519
0.639
0.837
1.00
1.24
1.43
1.61
1.81
2.07
2.27
3 -hr IF
(0.410.0.661)
(0.503-0.813)
(0.657-1.07)
(0.785-1.29)
(0.937-1.67)
(1.051.95) 11
(1.15-2.28)
(1.242.64)
(1.373.13)
1 (1.463.50)
0.671 7F
0.783
0.972
1.14
1.37
1.56
1.75
1.95
2.23
2.45
6 -hr IF
1(0.534-0.846)11(0.622-0.988)11
(0.70-1.23)
(0.895-1.45)
(1.051.82) 11
(1.16-2.11) 11
(1.252.45)
(1.352.3)
(1.49-3.34)
1 (1.593.73)
0.882
0.989
1.21
1.40
1.87
1.90
2.13
2.36
2.73
3.00
12 -hr
(0.692-1.08)
(0.73-1.24) 11
(0.964-1.51)
(1.11-1.76) 11
(1.30.2.21) 11
(1.432.55) 11
(1.552.96)
(1.673.42)
(1.844.05)
(1.97-4.52)
1.09
1.24
1.51
1.74
2.08
2.36
2.88
2.96
3.42
3.77
24h7r
(0.351.35)
(1.01-1.54) 11
(1.22-1.87) 1
(1.632.73)
(1.80.3.15)
(1.963.65)
(2.11-4.2)
(2.335.01)
(2.505.61)
2 -day
1.37
1.12-1.68
1.55
1.27-1.90
1.87
1.52-2.30
2.15
1.742.66
2.57
2.033.33
2.91
2.24$.83
3.27
2.444.44
3.86
625.13
4.20
2.90.6.09
4.83
3.115.81
3 -day
(1.29-1.92)
1.47-2918
1.77-12.65
2033 07)
(2.36-3.83)
(2.67-4840)
(2.83-5.08) 11(3.035.3
33 4591
3.57-7871
4 -day
144-2.12
1.642.41 1.97-2992)
(2.26-3.38)
(2.67-4.20
268482
(3.12-5.55)
.345.36
36 57.51
3.979.37
2.9 0
3.30
4.3
4.8
6.11
7 -day
1.87 2963
20395(2.40-3.51)3.131-4.92(3.41-5.61)
3689.44
.92-79371(4.29-8.64)
4.58 9961
2.57
2.8533.01
10 -day
(2.14-3.07)
2.77-44.91
1-4.55.77
3.13
355554
3.879.30(4.16-7.20)
4.439.21(4.84-9.62)
5. 5-1.7
20 -day
(3.09-4.34)
34 0.4.79)
(3.9M.58)
(43 8-628
494-7.56)
(5.3M.52)
(5.29266
60477.0)
1(6.55-12.7)
1(6. 384.0
30 -day
3.47544
4.329.02
500.01
55 57.87
(6.21-9.38)
6:0.0.5
(7.11-11.8)
.46- 3.3
8.00.15.3
8.412- 6.8
45 -day
5.079.88)
(5.56-7.65)
(64 4992)
(7.14-10.0)
(7.90-617.8
(8.47-13.1)
(8.91-14.6) 11(9.26-16.3)
9.80.8.5
10.2- 0.1
60 -day
59 89.15
66 59 10
: 3 0.6
8.56-71.9
9.39 3.9
10.0.15.4
10.517.0
108418.8
11 321.0
11.78 2.7
t Precipitation frequency (PF) esfimates in this table are based on frequency analysis of partial duration series (PDS).
Numbers in parenthesis are PF estimates at lower and upper bounds of the 90% confidence interval. The probability that precipitation frequency estimates
(for a given duration and average recurrence interval) will be greater than the upper bound (or less than the lower bound) is 5%. Estimates at upper bounds
are not checked against probable maximum precipitation (PMP) estimates and may be higher than currently valid PMP values.
Please refer to NOAA Atlas 14 document for more information.
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PF graphical