FLOOD02312

• County: Fremont
• Community: Canon City
• Stream Name: Arkansas River
• Basin: Arkansas
• Title: Orchard Avenue Drainage Basin Planning Study
• Date: 11/1/1994
• Prepared For: Canon City
• Prepared By: Graef, Anhalt, Schloemer
• Floodplain - Doc Type: Floodplain Report/Masterplan

ORCHARD AVENUE BASIN
TIME OF CONCENTRATION AND CN CALCULATIONS
PROPOSED CONDITIONS

AREA
DESIG.

C10
(10 yr) L(It)

2 0.60

4 0.60

6 0.60

8 0.60

10 0.60

12 0.60

14 0.60

16 0.40

18 0.30

20 0.40

22 0.40

24 0.40

26 0.60

28 0.60

30 0.40
32 0.60

34 0.60

36 0.60

38 0.60

40 0.60

42 0.60

300

300

300

300

300

300

300
300

300

300

300

300

300

300

300

300

300

300

300

300

300

Initial T ci
Slope Ii
(%) (min)

Travel-nme
Slope V
L (It) (%) _~ps)

1.33 14.74 3300 1.33 '7.50

0.95 16.47 3500 0.95 7.00

0.99 16.25 3200 0.99 l.10

1.33 14.74 2700 1 .33 7.50

1.13 15.55 3000 1.13 7.40

1.00 16.19 1000 1.00 3.50

1.74 13.49 2000 1.74 5.00

Tt
(min)

TC
(min)

TC EXIST DEV ARI:A
(1!2...~~ CN DESIG.

7.33 22.07 0.:368 86.2 86.95

2

8.33 24.80 0.413 88.15 88.45

4

7.51 23.76 O.:l96 88.45 88.45

6

6.00 20.74 0.:346 86.2 87.7

8

6.76 22.31 0.:3'72 138.7 138.7

10

4.76 20.96 0.:H9 86.25

87

12

6.67 20.16 0.:l:36 84.75 87.5

14

0.90 23.47 2600 0.90 4.60 9.42 32.90 0.5,l{3 111.7 83

16

4.70 15.55 7100 4.70 5.60 21.13 36.88 O.!,11 IlO.5 80.5

18

2.88 15.99 3900 2.86 4.40 14.77 30.76 0.513

4.58 13.72 2100 4.58 5.40

80 80.25

20

6.48 20.20 o.:m 81.25 81.25

22

3.78 14.62 3400 3.78 4.60 12.32 26.94 0.449 82.75 83.1

24

0.89 16.83 600 0.89 3.20

1.91 13.08 1900 1.91 5.70

2.89 15.97 2400 2.813 5.40
1.92 13.06 2200 1.9:2 6.90

3.13 19.95 0.3:33 El7.1 87.5

26

5.56 18.64 0.::1'11 86.4

89

28

7.41 23.38 O.3!lO

79 82.7

30

5.31 18.37 0.306 84.95 89.5

:32

4.46 9.89 3200 4.413 5.10 10.46 20.35 0.3:19 79.85 84.75

2.15 12.58 2300 2.15 5.60

:l4

6.85 19.42 0.3,!4 84.6 87.5

:,6

3.65 10.56 3100 3.65 5.50

1.83 13.27 2700 1.8:l 4.00 11.25 24.52 0.4(19 82.95 89.5

38

4.46 9.89 3200 4.4H S.50

9.39 19.96 0.3::13 82.5 85.9
9.70 19.58 0.3,~6 '79.85 82.5

40

42