HomeMy WebLinkAboutDrainage Reports - 08/16/2006' � v
TSTTST9 INC. CONSULTING ENGINEERS
9 'c�• ; i i� 4kra �
August 16, 2006
Mr. Rex Burns
Larimer County Engineering Department
P.O. Box 1190
Fort Collins, CO 80522
Re: Clydesdale Park PUD — Filing Two
Project No. 0957.0001.00
Dear Mr. Burns:
We are pleased to re -submit this letter of addendum to the Final Drainage Report for the
Clydesdale Park PUD — Filing Two subdivision. This letter addresses the drainage swale
between Shetland Lane and Vista Grande Subdivision as well as Ponds G and D on the _
Clydesdale Park PUD — Filing Two. We have addressed your comments dated July 3,
2006.
In the Final Drainage Report prepared by TST, Inc. Consulting Engineers, submitted
December 2001, the drainage system in Clydesdale Park PUD was designed to collect
water from ST — 2 and basin 207 in Pond D and discharge this flow into the swale in
question. This swale conveyed stormwater to ST — 6 where it passed under the
emergency access road to flow into Pond G. The 100 — year design flow in this swale
was 8.2 cfs and did not include any offsite contribution from the adjacent property to the
East. The design cross section was a grass lined channel with a 4' to 8' bottom width,
3:1 side slopes and a bottom slope of 0.5% downstream. With this design, the 100 —
year water surface elevation did not encroach on the residential lots along Messara Dr.
Two factors have contributed to the re -analysis of this drainage system. First, it was
_
observed that the swale was not built as designed. The existing cross section had a
triangular rather than trapezoidal cross section and a bottom slope of 0.35%. Second,
the Vista Grande subdivision, adjacent to the East side of Clydesdale Park PUD,
designed their drainage system to release their detained stormwater into Pond D (which
is not actually a detention pond). This flow was not accounted for in the Final Drainage
Report for Clydesdale Park PUD — Filing Two and is equal to 7.9 cfs in the 100 — year
event (according to the Final Drainage Report, Vista Grande, P.D. submitted May 2002).
Although the Vista Grande flow was accounted for in a previous Clydesdale Park PUD
drainage study, it was omitted from the Filing Two Final Drainage Report. The addition of
Vista Grande flows to the swale caused a near doubling of the design flow, and when
coupled with the incorrect construction of the swale, resulted in the 100 — year water
surface elevation encroaching on the back of lots along Shetland Lane. According to
normal depth calculations, this additional flow would not have impacted the lots along
Messara Dr. However, a detailed hydraulic analysis of this swale as designed using
HEC-RAS illustrated that one lot would have been impacted.
748 Whalers Way, Bldg, D
To evaluate the situation TST, Inc. Consulting Engineers surveyed the as -built condition
Fort Collins, CO 80525
970.226.0557
in the swale, pond, culverts and building corners between August 2005 and February
metro 303.595.9103
2006. These as -built points were used to generate contours and a hydraulic analysis of
fax 970.226.0204
the as -built condition was performed. The swale was evaluated using HEC-RAS from
Pond G through ST — 6 to Pond D. The downstream water surface elevation was
info@tstinc.com
assumed to be the 100 — year water surface elevation in Pond G as stated in the Final
www.tstinc.com
Drainage Report. This hydraulic analysis gave the 100 — year water surface elevation
along the Swale and confirmed that the water surface would encroach on the back of lots
as suspected. The survey information also indicated that Pond D was not draining as
designed because of shallow depressions that were left after construction.
To resolve the issue of water encroaching on the back of lots and improve the condition
of the drainage system TST, Inc. Consulting Engineers has developed a grading plan for
Pond D and the swale. Holding the inverts of all storm pipes constant as well as not
interfering with the individual lots or the irrigation ditch that runs along the East side of the
swale, we have developed a plan that will adequately convey the 100 — year flow. It is
proposed that Pond D be re -graded to drain to the swale as shown on the revised
grading plan (attached for reference). It is further suggested that a concrete trickle pan
be added in areas where the slope is less than 2% to convey the nuisance flows from
irrigation and small storms. The new designed channel has a bottom slope of 0.30%, a
bottom with of 2' to 4' and side slopes between 3:1 and 2:1. A hydraulic analysis of the
redesigned channel has been performed in HEC-RAS and shows that it will convey the
combined 100 — year design flow from Clydesdale Park PUD and Vista Grande without
encroaching on back of lots. The results of this analysis are attached to the end of this
letter. The steep side slopes in some areas are required to prevent disturbance of
existing lots. Because these steep side slopes are only about 2' in vertical elevation their
maintenance should not be an issue with a manual mower. The homeowners association
has agreed to accept maintenance responsibility for these 2:1 slopes, as stated in the
attached letter.
Pond G was designed with a 10.01 in diameter orifice to restrict the release rate from
Clydesdale Park PUD to 4.9 cfs by J.R. Engineering in their Final Drainage and Erosion
Control Report for Clydesdale Park. Because the additional stormwater from Vista
Grande PD is being passed through Clydesdale Park PUD and does not need to be
detained, according to the J. R. Engineering design this orifice should be increased to a
diameter of16.51 in. This will result in a combined release rate of 12.70 cfs.
In conclusion, this letter of addendum has summarized the assumptions of the Final
Drainage Report for Clydesdale Park PUD, documented the as built condition of the
ponds and swales, documented the increase in flow caused by stormwater discharge
from Vista Grande PD and proposed a revised grading plan to prevent the encroachment
of the 100 — year water surface elevation into lots along Messara Dr. Supporting results
from HEC-RAS and exhibits of the high water elevation can be found at the end of this
letter.
We look forward to your review and will gladly answer any
Respectfully,
TST, INC. CONSULTING ENGINEERS
��LG
5u_mmer D. Jawson
SDJ/DBL/tl
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1879 Ins
/// - - - - -
0
1100 0 100 200
scale 1"=100' feet
LEGEND
100yr WSEL,
Re —Design
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HEC—RAS
1279 O
X—SECTION
-X m
1
W
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TST, INC.
Consulting Engineers
748 Whalers Way, Bldg. D
Fort Collins, Colorado
970-226-0557
HEaRAS Plan- ReOealan River. Swam, Reach- Swale
Reach
River Sta
Profile
d Total-
Min Ch El
W.S. Eliv
C(d W.B.
E.G Rev
-EA Slope
Val CMP
Flow Area
Top WaBh
Fmde 1 Chl
(cfs)
(n)
K
(5)
(n)
I (nm)�-
_ We)
!q 6)
(h)
Swale
2279 .-.'-
CP
8.20
4928.81
4929.01
4929.D5
0.0D3139
2.60
8.18
42.66
0.77
Swale
2279
CP+VG -
18.10
4928.61
4929.32
4929.33
0.000608
1.74
24.23
60.11
0.38
Swede
2179
CP,
8.20
4928.27
4928.90
4928.69
4928.91
0.000647
1.66
12.00
42.65
0.38
Swab -
2179
CP-VG
16.10
4928.27
4929.28
4928.79
4929.29
0.0D0304
1.58
23.52
60.12
0.28
Swale
2079
CP
8.20
4927.94
4928.79
4928.46
4928.63
0.001103
2.67
6.61
15.99
0.52
Swale.
2078
jCF4VG
16.10
4927.94
4929.18
4928.65
4929.24
0.00D963
3.24
10.81
18.34
.0.52
Swab
1979
CP
8.20
4927.80
4928.38
4928.63
0.003518
4.52
2.97
6.23
0.92
Swab
11979 -
CP+VG -
16.10
4927.60
4928.71
4928.69
4929.05
0.D03264
5.55
5.33
8.22
0.94
Swale
1879
CP
8.20
4927.27
4920.13
4928.32
0.002468
3.98
3.26
6.26
0.78
Swale
1879
CP+VG
16.10
4927.27
4928.43
4928.74
0.002755
- 5.20
5.42
7.93
0.87
Swale
Me
CP
8.20
4926.90
4927.73
4927.73
4920.00
0.004129
4.94
2.98
6.26
0.99
ab
1779
CP+VG
16.10
4926.90
4928.D6
4928.06
4928.42
0.003803
6.00
5.38
8.28
1.01
ale
1679
CP
8.20
4926.61
4927.35
4927.51
0.002944
3.93
3.62
7.62
0.83
ale
[so--ale
,1679
(CP-VG
- 16.10
4926.61
4927.87
4927.89
0.002522
4.71
6.40
9.29
0.82
ale
1579
CP
8.20
4926.28
4927.09
4927.24
0.002398
3.78
3.87
8.15
0.76
1579
CP-VG
16.10
4926.28
4927.64
4927.69
0.001360
3.90
.8.11
10.35
0.62
'Swab
1479
CP
8.20
4925.90
4926.69
4926.69
4926.93
0.003986
4.63
3.16
7.33
0.98
Swab
1479
'CP+VG
16.10
4925.90
4927.50
4927.58
0.000639
3.07
11.37
12.38
0.44
Swab
1379
CP
8.20
4825.62
4928.81
4926.66
0.000904
1.90
4.33
7.43
0.44
Swab
1379 -
CP.VG
16.10
4925.62
4927,51
4927.54
0.000154
1.19
13.93
16.02
0.20
Swale
1279
CP -
8.20
4925.29
4926.54
4926.60
0.000491
2.32
6.51
9.05
0.37
Swab
1279
CP+VG
16.10
4925.29
4927.40
4927.52
0.DD0173
2.03
19.12
19.46
0.24
1
Swab
1179
CP
8.20
4924.99
4926.53
4926.55
0.000219
1.81
11.59
13.76
0.26
6wela
1179
CPWG
16.10
4924.99
4927.49
4927.60
0.000089
1.60
28.38
21.46
0.18
6wale
1154
CP
8.20
4924.92
4926.53
4926.55
0.D00147
1.52
12.64
14.48
0.21
Swale
1154
CP-VG
16.10
4924.92
4927.481
4927.50
0.000067
1.40
3D.11
22.18
0.16
Swale
1133
CP
8.20
4924.90
4926.52
4925.61
4926.54
0.000180
1.74
8.48
34.58
0.24
Swale
1133
CP+VG
16.10
4924.90
4927.46
4925.88
4927.49
0.000137
2.03
14.12
76.05
0.22
Swale
1110
Culwerl
Swale
1067
CP
8.20
4924.93
4925.69
4925.88
0,013613
3.461
2.37
9.56
0.79
Swale
1007
CPWG
16.10
4924.93
4925.89
4925.89
4926.291
0.019993
5.09
3AS
12.06
1.01
Shale
1066
CP
8.20
4924.79
4925.46
4925.55
0.015023
2.49
3.29
9.85
0.76
Swale
1066
CPWG
16.10
4924.79
4925.66
4925.79
0.014626
2.92
5.52
12.75
0.78
Swam,
1026
CP
8.20
4924.36
4925.12
4925.17
0.006380
1.77
4.64
1224
0.51
Swale
1026
CP+VG
16.10
4924.36
4925.35
4925.42
0.DO5787
2.02
7.98
16.05
0.50
Swale
990
CP
8.20
4924A4
4924.96
4924.99
0,003794
1./3
5.73
14.04
0.40 '
Swale -
990
CP+VG
16.10
4924.14
4925.21
4925.25
0.003431
1.631
9.86
18.41
0.39
Swam,
900
CP
8.20
4923.78
4924.70
4924.73
0+002270
1.20
6.82
14.77
0.31
Swale
9W
CP-VG
16.10
4925.78
4924.98
4925.01
0.002190
1.40
11.47
19.15
0.32
Swale
SW
CP
8.20
4923.48
4924.55
4924.67
0.001141
- 0.94
8.71
16.23
0.23
Swale
8W
CP+VG
16.10
4923.40
4924.81
4924.83
0.001406
1.21
13.36
20.1D
0.28
.Swale
700
CP
8.20
4923.81
4924.12
4924.12
4924.25
0.028000
2.86
2.87
11.21
0.99
Swale 1700
CP-VG
16.10
4923.61
4924.28
4924.28
4924.45
0.026100
3.30
4.88
14.54
1.00
Swab
850
CP
8.20
4921.53
4922.421
4922A21
0.000101
0.31
26.51
42.68
0.07
Swale
BW
CP+VG
16.10
4921.53
4922.51
4922.52
0.000247
0.53
30.61
43.54
0.11
Swale
600
Cp
37.00
4921.46
4922.35
4922.38
0.D01837
1.36
27.22
42.02
0.30
Swale
800
CP-VG
44.90
4921.46
4922.44
4922.47
O.D01830
1.45
30.87
- 42.92
0.30
Swab
500
CP
37.DO
4921.14
- 4922.24
4922.26
0.000861
1.07
34.52
43.10
0.21
Swale
S00
CP+VG
44.90
4921.14
4922.32
4922.34
0.000946
1.18
'37.99
43.91
0.22
Swale
400 MCP
37.00
4921.45
4922.08
4922.11
0,002912
1.53
24.15
44.03
0.36
Swale
400 -
CPWG.
44.90
4921.45
4922.14
4922.19
0.0029731
4
44.79
0.37
HEC-RAS Plan: ReDesion River. Swale Reach: Swale 1Con0nued)
Reach
_River Sb
Prot�b
G Total
Min Ch El
W.S: Ebv
Cd1 W S,
E.G. Elev
E.G-'
Val ChA
Flow Area
Top Wk10i
Froude a CM
(as)
(n)
(e)
(n)
(n)
(NI)
(hn)
(sa n)
(n) .
Swab
300
CP
37.00
4921.00
4921.88
4921.90
0.001565
1.24
29.85
46.96
0.27
Swale
300
CP•VG
44.90
4921.00
4921.92
4921.95
0.001884
1.41
31.83
47.40
0.30
Swale
200 -
CP
37.00
4920.50
4921.00
4921.81
0.000490
0.86
43.11
49.18
0.16
Swale
Z00
CP•VG
44.80
4920.50
4921.82
4921.84
0.000676
1.02
44.03
49.36
0.19
Swale
100
37.00
4920.50
4921.77
4921.77
0.000322
0.71
51.88
57.07
0.13
Swale
44.90
4920.50
4921.77
4921.78
0.000471
0.86
52.00
57.09
0.16
jIDDjj
kCp.vo)
Swale
37.00
4920.31
4921.76
4921.76
0.000126
0.51
72.37
64.70
0.09
Swab
WG
44.90
4920.31
4921.76
4921.76
0.000185
0.82
72.31
64.69
0.10
Swab
0
CP
37.00
4919.00
4921.76
4919.54
4921.76
0.000007
0.15
208.09
98.62
0.02
Swale
0
CPWG
44.90
4919.00
4921.78
4919.57
4221.76
0.000010
022
206.89
98.62
0.03
Clydesdale Park - Swale Plan: Re -Design 8/15/2006
IRS = 2279
4932.0
.035
�.Ic .035
0
1
Legend
6
a
`
WS CP+VG
4931.5
in
WS CID
-4
7
Ground
4931.0
0
Bank Sta
�t
H
b
r
4930.5
c
O
m
N
w
4930.0
4929.5
4929.0
-
4928.5
0 20
40
60 80 100 120 140 160
180
Station (ft)
Clydesdale Park - Swale Plan: Re -Design 8/15/2006
RS = 2179
-—
- .035 - -- �i . �- .035
[�4
4933
ILegend
6
a
WS CP+VG
WS CP
4932
—�
Ground
Ineff
•
Bank Sta
4931
-
r
c
o
O
m
w
4930
4929
4928,-
20 40
60
80 100 120 140
160
Station (ft)
Clydesdale Park - Swale Plan:
Re -Design 8/15/2006
RS = 2079
.035 --
--.035�
4933
1
Legend
6
+
WS CP+VG
4932
WS CP
Ground
Ineff
4931
Bank Sta
Y
r
o
4930
w
4929
4928
4927
-
30
35
40 45 50
55 60 65 70
Station (ft)
Clydesdale Park - Swale Plan:
Re -Design 8/15/2006
IRS = 1979
035 .016 +
.035 — �Z
4931.5
Legend
WS CP+VG
4931.0
WS CP
Ground
4930.5
0
Bank Sta
To
4930.0
x
c
4929.5
>
w
4929.0
4928.5
4928.0
4927.5
44
46
48 50 52 54
56 58 60 62 64
Station (ft)
Clydesdale Park - Swale Plan: Re -Design
8/15/2006
RS = 1879
�— .035 .016 + — - - ---.035
-
4932
Legend
WS CP+VG
S
WS CP
4931
p
Ground
y
Bank Sta
't-
4930
ti
m
w
4929
4928
4927—
—T
40
45 50 55
60
65
Station (ft)
Clydesdale Park - Swale Plan: Re -Design
8/15/2006
RS = 1779
.035 .016 - - - -.035--
- - �
4932
Legend
WS CP+VG
4931
WS CP
�—
Ground
ABank
Sta
4930
c
4929 Ip
'm
w
4928
4927
4926
--
45
50 55
60
65
Station (ft)
Clydesdale Park - Swale Plan: Re -Design 8/15/2006
RS = 1679
035 '1 �— .035 —�
4936
1
Legend1
6
•
WS CP+VG
WS CP
4934.Ground
•
Bank Sta
4932
�
o
to A
a
ca
m
O
W
4930
V
�
0
u
4928
4926
0
10 20 30 40 50 60
70
Station (ft)
Clydesdale Park - Swale Plan: Re -Design 8/15/2006
RS = 1579
.035 '�. �_.035
4936
0
1
Legend
6
WS CP+VG
WS CP
4934
'
Ground
e
Bank Sta
O
4932
o
m
J
W
4930
0
4928
4926
r�T�
0
10 20 30 40 50 60
70
Station (ft)
Clydesdale Park - Swale Plan: Re -Design
8/15/2006
RS = 1479
035
.035
4932
0
1
Legend
6
WS CP+VG
4931
WS CP
13
Ground
•
4930
Jf .
0
Bank Sta
4929
3
a
m
W
4928
4927
4926
4925
0
10 20 30 40 50
60
70
Station (ft)
Clydesdale Park - Swale Plan: Re -Design
8/15/2006
RS = 1379
035
016
4930
Legend
WS CP+VG
WS CP
4929
Ground
l
Bank Sta
4928
p
C
0
W
4927
4926
4925
r r ir
r
0
10 20 30 40 50
60
70
Station (ft)
Clydesdale Park - Swale Plan: Re -Design
8/15/2006
RS = 1279
.035
O �--.035—�
4931
1
Legend
6
+
WS CP+VG
4930
WS CID
a
Ground
•
Bank Sta
492
r
C
4926
_
_m
W
4927
4926
4925
r
0
10 20 30 40 50
60
70
Station (ft)
Clydesdale Park - Swale Plan: Re -Design
8/15/2006
IRS = 1179
4930
1
Legend
6
WS CP+VG
4929
WS CP
Ground
�
- Bank Sta
4928
c
4927
m
w
4926
4925
4924
30
35 40 45 50 55
60
65
Station (ft)
Clydesdale Park - Swale Plan: Re -Design 8/15/2006
IRS = 1154 22' Upstream of Culvert
4929
035 — '� � .035
0
1
Legend
6
+
WS CP+VG
WS CP
4928
Ground
•
Bank Sta
4927
c
A
1
N
W
4926
4925
4924
rTT,
0 10 20 30 40 50 60
70
Station (ft)
Clydesdale Park - Swale Plan: Re -Design 8/15/2006
RS = 1133 2' Upstream of Culvert
4929
035 .035
—�
0
1
Legend
6
WS CP+VG
Ws CID
4928
Ground
Inert
•
Bank Sta
4927
(11
c
0
a
m
m
W
4926
4925
4924
0 20 40 60 80
100
Station (ft)
Clydesdale Park - Swale Plan: Re -Design 8/15/2006
RS = 1110 Culy 24" RCP
-.035-
.035- -
-
4930
� -- - - - - -
Legend
6
WS CP+VG
4929
WS CP
Ground
Ineff
4928
Bank Sta
\c
0
-
4927-1
a�
w
4926
4925
4924 -------------
0 20
40 60 80
100
Station (ft)
Clydesdale Park
- Swale Plan: Re -Design 8/15/2006
RS = 1110 Culy 24" RCP
-.035
- .035 + - 035
4930
- -
-
Legend
- '
WS CP+VG
4929 '
WS CID
}
Ground
A
-- -
Ineff
4928
•
Bank Sta
r
c
4927
r�
w
4926
4925
4924
- -,
0 20
40 60
80
Station (ft)
Clydesdale Park - Swale Plan: Re -Design 8/15/2006
RS = 1087 2' Downstream of Culvert
035 .035-— .035
4930
Legend
S clt�k
a
WS CP+VG
4929
Ftnc>7
��
WSCP
Ground
Ineff
4928
Bank Sta
c
4927
cc
w
4926
4925
4924
T— T
0
20 40 60 80
Station (ft)
Clydesdale Park - Swale Plan: Re -Design 8/15/2006
IRS = 1066 22' Downstream of Culvert
035 �� .035— .035 —>
4930
Legend
WS CP+VG
4929
WS CP
(�
i s�dPWc+�k C talc¢
Ground
A
�!
Ineff
4928
a
Bank Sta
c
4927
a�
w
4926
4925
4924
�— Tom-
0
20 40 60 80 100
Station (ft)
Clydesdale Park - Swale Plan:
Re -Design 8/15/2006
IRS = 1026
IE
.035 —
035
.035
4929
Legend
WS CP+VG
WS CP
4928
_CiCVJrxik
PeACAL
Ground
Bank Sta
4927
x
0
0
w
4926
4925
4924 1
F I
T
0
20 40
60 80
100
Station (ft)
Clydesdale Park - Swale Plan:
Re -Design 8/15/2006
RS = 990
.035 —
035
.035
4928.0
Legend
WS CP+VG
4927.5
ESic6tt•ex1�,
�
WSJ
—9
Ground
4927.0
Bank Sta
4926.5
c
4926.0
m
w
4925.5
4925.0
4924.5
4924.0
0
20 40
60 80
100
Station (ft)
Clydesdale Park - Swale Plan: Re -Design 8/15/2006
RS = 900
4928 —.035 .035 �035
Legend
WS CP+VG
�dcvral{� WS cP
4927 mp Ground
•
Bank Sta
4926
_m
w 4925
4924
4923
0 20 40 60 80 100
Staton (ft)
Clydesdale Park - Swale Plan: Re -Design 8/15/2006
RS = 800
4928 035 + .035 _+035�
Legend
WS CP+VG
`` WS CID4927 S Wq\iL _ Ground
Bank Sta
4926
r
C
O
N
W
4925
4924
49230
20 40 60 80 100
Station (ft)
Clydesdale Park - Swale
Plan:
Re -Design 8/15/2006
IRS = 700
035 _II_
.035.035�
4927.0
Legend
WS CP+VG
4926.5
WS CP
1
S iC� C�
•
Ground
4926.0
Bank Sta
4925.5
0
Ff
W
4925.0
4924.5
4924.0
4923.5
r
T�
0
20 40
60 80
100
Station
(ft)
Clydesdale Park - Swale
Plan:
Re -Design 8/15/2006
IRS = 650
.035 - -
- .035
- - -- .035
4927
Legend
WS CP+VG
4926
WS CID
C.
■
Ground
-�
Bank Sta
4925
iC
c
4924
m
w
4923
4922
4921
0
20 40
60 80
100
Station (ft)
Clydesdale Park - Swale
Plan: Re -Design 8/15/2006
RS = 600
035 �
.035 '' .035
4927
Legend
WS CP+VG
4926
WS CP
■
Ground
��S�c12Wa��c
�Acx_
Bank Sta
4925
—�
c
4924
LU
w
4923
4922
4921
- —
-
0 20 40
60 80
100
Station (ft)
Clydesdale Park - Swale
Plan: Re -Design 8/15/2006
RS = 500
035
.035
4927
3
Legend
5
WS CP+VG
4926
WS CID
a
Ground
a
Bank Sta
4925
c
M4
'm
w
4923
4922
4921
�—
0 20 40
60 80
100
Station (ft)
Clydesdale Park - Swale Plan: Re -Design 8/15/2006
RS = 400
035 �L -- .035 _I
4926
0
3
Legend
5
�
WS CP+VG
WS CP
4925
C�
Ground
Ground
—�i
•
Bank Sta
4924
_m
W
4923
4922
4921
�-
0 20 40 60 80
100
Station (ft)
Clydesdale Park - Swale Plan: Re -Design 8/15/2006
RS = 300
035 .035.035 -
4926
Legend
WS CP+VG
WS CP
4925
_
Q ��V�Gli� --'
Ground
Bank Sta
4924
r
c
iu
w
4923
4922
4921
-�- T-
0 20 40 60 80
100
Station (ft)
Clydesdale Park - Swale Plan: Re -Design 8/15/2006
RS = 200
035 .035 .035 -�
4926
Legend
•
WS CP+VG
4925
WS CP
Ground
Bank Sta
4924
c
4923
0
w
4922
4921
4920
0
20 40 60 80
100
Station (ft)
Clydesdale Park - Swale Plan: Re -Design 8/15/2006
RS = 100
035— .035 Ni( .035
4925
Legend
WS CP+VG
4924
I
iSl`k -
--'C�
WS CP
Ground
--�Zj
•
Bank Sta
4923
a4i
m
u!
4922
4921
4920
0
20 40 60 80
100
Station (ft)
Clydesdale Park - Swale
Plan: Re -Design 8/15/2006
RS = 50
.035 —
.035 'r .035
4927
Legend
WS CP
4926
WS CP+VG
Ground
4925—�
T
0
Bank Sta
r
4924
0
w
4923
4922
4921
4920
0
20 40 60
80 100 120 140
Station (ft)
Clydesdale Park - Swale
Plan: Re -Design 8/15/2006
RS = 0
0pit
.035
035
4925
Legend
WS CP
4924-
(�
WS CP+VG
K—
Ground
Levee
4923
Bank Sta
c
4922
m
W
4921
4920
491
0
20 40 60
80 160 120 140 160
Station (ft)
HEGRAS Plan: SuOI-Full River Swale R.mr - Swale
Reach
Rrvar Sim
Pn18fe
C TOW
Min CA EI
W.6. EMv
I CM W.B.
E.G. Elev
- E.O. Slope
Val ChM
_Flow Area
Toy Wtllh
Frou& Y CH
(rts)
ln)
11q
(6)
M)
(Iva)
(fus)
laq N
M)
Swab
2279
CP
8.20
4828.70
4930.1/
4928.891
4930.141
0.000002
0.07
121.57
104.141
0.01
swab
2279
CP-VG
16.10
4928.701
4930.481
4928.95
4930.46
0.000004
0.10
155.561
107.621
0.02
Swale
2179
CP
5.201
4928.511
4930141
4928.811
4930.141
0.000004
0.08
98.38
95.16
OM
Swab
2179
CP-VG
16.10
4928.611
4930.461
4928.911
4930,461
0.000006
0.12
129.34
97.57
0.02
Swab
2079
CP
8.20
192B.05
4930.131
1 4930.141
0.1300331
0.63
12.94
17.18
0.13
,Swat
12079
CP.VG
16.10
4929.051
4930.45
4930.481
0.000450
0.W
18.78
19.92
0.16
Style
W79
CP
8.201
4920.951
4930.02
1 4930.061
0.003433
1.61
5.10
9.55
0.38
Swale
1979
CP•VG
16.101
4928.95
F 4930.29
1 4930.351
0.003923
2.00
8.041
11.971
0.43
Swab
1879
CP
8.20
4928.82
4929.83
1 4929.681
0.004290
1.53
5.021
12.42
0.44
Swab
1879
CP.VG
16.10
4928.821
4929.8e
1 4929.921
0.004815
2.25
8.201
15.88
0.47
Swale
1770
CP
8.20
4828.38
4929.13
4929.18
0.W5906
1.79
4.59
11.86
0.49
Swale
1779
CP-VG
16.10
4928.38
4929.39
4929.451
0.004606
2.08
5.08
15.66
0.47
Swale
1679
CP
5.20
4827.82
4828,81
4928.84
0.002225
1.25
6.58
13.25
0.31
Swab
1679
CPWG
16.10
4927.82
1928.10
4929.131
0.002268
1.48
10.84
17.01
0.33
Swale
1579
CP
8.20
4927.511
4928.391
4928.461
0.007870
2.12
3.W
8.77
0.56
swab
1579
CP-VG
18.10
4927.511
4928.67
IB28.78
0.008715
2.39
6.73
11.58
-
,0.55
Swale
1479
CP
8.20
1927.01
4928.05
4928.07
0.002209
1.28
6.39
12.16
0.31
Swale
7479
CPWG
16.10
4927.01
4928.31
4928.35
0.002588
. 1.62
9.97
15.14
0.35
Swale
1379
CP1
8.201
492SAIll
4927.70
4927.75
0.005299
1.87
1.91
12.23
0.46
Swale
1379
CP.VGa16.104925.61
.89
4927.94
4928.00
0.005201
1.95
8.27
16.11
0.48
Swale
1279
CP
.13
4927.08
1927.15
0.006824
2.09
3.92
8.28
0.54
Swab
1279
CPWG13
4927.57
4927.82
0.002870
1.79
8.99
12.52
0.37
Swale
1 79
CP
81
492(
482%1
0.003769
1.62
5.07
10.19
0.40
wale
Sil
1179
CPWG61
4927.50
4927.51
0.000479
0.89
18.09
18.92
0.16Swale
1154
CP
S
4926,54
4928.57
0.002237
1.32
6.20
11.38
0.32
Swale
1154
CP.VG
16.10
4925.45
4927.48
4827.50
0.000305
0.74
21.81
21.58
0.13
Swab
1133
CP
8.20
ID25.11
1928.52
1925.71
4826.54
0.000562
1.13
7.23
15.18
0.18
Swale
1133
CPWG
16.10
4925.11
4827,47
4825.93
4927.49
6.000316
1.25
12.90
20.86
0.15
Swale
1110
-
Culvert
Swab
�1087
1007
CP
8.20
4824.93
4925.69
4925.88
0.013813
3.16
2.37
9.56
0.78
Swale
CP-VG
18.10
192/.93
4925,89
4925.89
4926*29
0.019993
5.09
3.18
12.06
1.01
Swab 11006
CP -
8.20
4.4.7.
4925./8
4925.56
0.015023
2.49
3.29
9.85
0.76
Swale
lose
CP•VG
le.101
4924.79
4925.66
4925.79
0.014626
2.92
5.52
12.75
0.78
Swab
1026
CP
8.20
4924.36
4925.12
4925.17
0.006380
1.77
4.64
12.24
0.51
Swale
1026
CP•VG
18.70
4824,38
4825.35
4925.42
0.005787
2.02
7.98
16.05
0.50
Swale
990
CP
8.20
4924.14
4924.96
4924.99
0.0037941
1.43
5.73
14.04
0.40
Swale
9W
CP-VG
16.10
9924.14
9925.21
4925.25
0.003431
1.63
9.86
18.41
0.39
Swale
900
CP
8.20
4923.78
4924.70
4924.73
- 0.002270
1.20
5.82
14.77
0.31
Swab
900
CP.VG
16.10
4923.78
IB24.98
4925.01
0.002190
1.40
11.47
19.15
0.32
Swale
OW
CP
8.20
4923./8
4924.55
4924.57
0.001141
8.71
16.23
0.23
Swale •B00
CP.VO
18.10
4823.48
4B24.81
{924.83
0.001406
13.36
20./0
0.28
12FG
Swale
700
CP
8.20
4923.61
4924.12
4924.12
4924.25
0.028000
287
1121
0.99
Swale
700
CP.VG
16.10
4923.81
4924.28
4924.20
4924.45
0.026100
4.88
14.54
1.00
Swab
650
CP
8.20
4921.53
4922.42
4922.42
0.000101
0.31
26.51
42.60
0.07
Swale
850
CPWG
16.10
4921.53
4922.51
4922.521
0.000247
0.53
30. 11
43.54
0.11
Shale 800
CP
37.00
4921.46
9922,35
4922,38
0.001837
1.36
27.22
42.02
0.30
Swale aw
CPWG
44.90
9921.46
4B22.44
4922.47
0.001830
1.45
30.87
42.92
0.30
Swale 15M
icP
37.00
4921.14
4922.241
4922.26
0.000861
1.07
34.52
43.10
0.21
Swale 500
CP.VG
44.80
1921.14
4922.32
4922.34
0.0009"
1.18
37.99
43.91
0.22
Swab 400
CP
37.00
4921'451
4922.08
/922.11
0.002912
1.53
24.15
44.03
0.36
Swale 100
CP•VG
44.90
4921451
4922.14
9922.19
0.002973
1.65
27.14
44.791
0.37
HFC RAS Pl..- Ru111-Fu8 RHee Swale R.- Swale (C Iinuw4l
Reach
Rivet S6
Pro81e
0 Tow)
Min Ch El
W.S. Elev
- Gil W.S.
E.G. Ebv
1 E.G- Slope
Val Chnl
Flow Area
Top MMIh
Floude a Chl
(a+)
(fl)
(fl)
(0)
(6)
(ftm)
(We)_
(aR 0)
(6)
Swale
300
CP
37.00
4921.00
4921.88
4921.90
0.001565
1.24
29.85
46.96
0.27
Swale
300
CP+VG
44.90
4921.00
4921.92
4921.95
0.001884
1.41
31.83
47.40
0.30
Swale
200
CP
37.00
4920.50
4921.80
4921.81
0.000490
0.86
43.11
49.18
0. 66
Swale
200 -
CPWG
44.90
4920.50
4921.82
4921.54
0.000676
1.02
44.03
49.36
0.19
Shale
/00
CP
37.00
4920.50
4921.77
4921.77
0.000322
0.71
51.86
57.07
0.13
swab
100
CP•VG
44.90
4920.50
4921.77
4921.78
0.000471
086
52.00
57.09
0.16
Swale
50
CP
37.00
4920.31
4921.78
4921.78
0.000126
0.51
72.37
64.70
0.09
Swale
50
CP-VG
44.90
4920.31
4921.78
4921.76
0.000165
0.62
72.31
64.69
0.1E
Swale
0
CP
37.00
4919.00
4921.76
4919.54
4921-76
0.000007
0.18
205.89
98.52
0.02
Swale
0
CPWG
44.90
4919.00
4921.76
4919.57
4921.76
0.000010
0.22
206.89
98.62
0.03
Clydesdale Park - Swale
Plan: AsBuilt-FullLength 8/15/2006
RS = 2279
035
.035
4933
0
Legend
j
WS CP+VG
'.
WS CID
4932
•
Ground
t1
Levee
4
�
Bank Sta
l
4931
x
c
0
io
w
4930
4929
4928
T� �T
0 50
100 150
200
Station (ft)
Clydesdale Park - Swale
Plan: AsBuilt-FuIlLength 8/15/2006
IRS = 2179
.035
.035 —
4934
Legend
WS CP+VG
4933
P
WS CP
N
Ground
Levee
4932
Bank Sta
O
�
4931
w
co
4930
4929
4928
—T-- �'
0
20 40 60
80 100 120 140
160
Station (ft)
Clydesdale Park - Swale
Plan: As Built -Full Length 8/15/2006
RS = 2079
035
.035 - + .035
4934
Legend
WS CP+VG
WS CP
4933
Ground�—
Bank Sta
O
4932
c
�
$
O
a
W
4931
4930
4929
0
10 20
30 40
50 60 70
Station (ft)
Clydesdale Park - Swale
Plan: AsBuilt-FuIlLength 8/15/2006
RS = 1979
035 --
--
--.035 '
4935
Legend
WS CP+VG
4934
WS CP
Ground
•
4933
Bank Sta
.to
_►
z
4932
1�1
o
w
4931
4930
—
4929
4928
. . . .
0
10 20
30
40 50 60
Station (ft)
Clydesdale Park - Swale
Plan: AsBuilt-FuIlLength 8/15/2006
RS = 1879
L`
r
.035—
.035
4935
Legend
WS CP+VG
4934
WS CP
Ground
•
4933
\S,
Bank Sta
4932-
c
o
'
O
w
4931
4930
4929
4928
0
10 20
30
40 50 60
Station (ft)
Clydesdale Park - Swale
Plan: AsBuilt-FullLength 8/15/2006
RS = 1779
035-
— .035
4935
Legend
WS CP+VG
4934
WS CP
■
Ground
•
4933
Bank Sta
4932
Vi
c
o
to
>
w
4931
_]
PAO
a
4930
4929
4928
0
10 20 30
40
50 60 70
Station (ft)
Clydesdale Park - Swale
Plan: AsBuilt-FuIlLength
8/15/2006
IRS = 1679
—.035—
.035
4935
Legend
WS CP+VG
4934
WS CP
Ground
4933
0
Bank Sta
4932
x
}
c
°
4931
O
J
w
4930
A
4929
4928
4927
T
0
10 20 30
40 50
60
70
Station (ft)
Clydesdale Park - Swale
Plan: AsBuilt-FuIlLength
8/15/2006
RS = 1579
035 — �
.035
4935
Legend
WS CP+VG
4934
WSCP
Ground
4933
Bank Sta
4932
J
4931
d
u
w
4930
J
d
4929
4928
1
4927
T
0
10 20 30
40 50
60
70
Station (ft)
F-
c
0
a
A
m
W
Clydesdale Park - Swale Plan: AsBuilt-FullLength 8/15/2006
RS = 1479
Station (ft)
Clydesdale Park - Swale Plan: AsBuilt-FullLength 8/15/2006
RS = 1379
0 10 20 30 40 50 60 70
Station (ft)
Legend
WS CP+VG
WS CP
Ground
Bank Sta
Legend
WS CP+VG
WS CP
Ground
•
Bank Sta
Clydesdale Park - Swale
Plan: AsBuilt-FuIlLength 8/15/2006
RS = 1279
035
.035 —
4932
Legend
WS CP+VG
4931
WS CIDGround
Bank Sta
4930
Ev
492s
m
uw
4928
4927
4926
0
10 20 30
40 50 60
70
Station (ft)
Clydesdale Park - Swale
Plan: AsBuilt-FullLength 8/15/2006
RS = 1179
.035
.035
4930
Legend
.
WS CP+VG
WS CP
4929
�—
Ground
Bank Sta
t
4928
�
p
C
0
m
w
4927
4926
4925
0
10 20 30
40 50 60
70
Station (ft)
Clydesdale Park - Swale Plan: AsBuilt-FuIlLength 8/15/2006
IRS = 1154 22' Upstream of Culvert
.035 .035 -
4930
3 YY
3
Legend
5
WS CP+VG
WS CID
4929
Ground
•
Bank Sta
4928
c
0
w
4927
4926
4925
——��
0
10 20 30 40 50 60 70
80
Station (ft)
Clydesdale Park - Swale Plan: AsBuilt-FuIlLength 8/15/2006
S = 1133 2' Upstream of Culvert
035 .035
4930
0 0
3
Legend
5
WS CP+VG
WS CP
4929
Ground
Levee
Ineff
4928
•
Bank Sta
C
O
G)
W
4927
4926
4925
0
10 20 30 40 50 60 70
80
Station (ft)
L
F:
c
0
d
w
0
Clydesdale Park - Swale Plan: AsBuilt-FullLength 8/15/2006
RS = 1110 Culy 24" RCP
-+— .035 3.
0
10 20 30 40 T 50 60
Station (ft)
Clydesdale Park - Swale Plan: AsBuilt-FullLength
IRS = 1110 Culy 24" RCP
0 20 40 60
Station (ft)
70
8/15/2006
m
80
Legend
WS CP+VG
WS CP
■
Ground
Levee
Ineff
•
Bank Sta
Legend
.
WS CP+VG
WS CP
■
Ground
A
Ineff
Bank Sta
Clydesdale Park - Swale
Plan: AsBuilt-FullLength 8/15/2006
IRS = 1087 2' Downstream of Culvert
.035--
-.035 .035
4930
FLegend
WS CP+VG
4929
WS CP
T
Ground
Ineff
4928
Bank Sta
c
4927
w
4926
4925
4924--
r-
-
0
20
40 60
80
Station (ft)
Clydesdale Park - Swale
Plan: AsBuilt-FuIlLength 8/15/2006
RS = 1066 22' Downstream of Culvert
035 + - .035
��- .035 r
4930
Legend
WS CP+VG
4929
WS CID
�fi7LC1L
Ground
r'"
Ineff
4928
Bank Sta
0
4927
a
w
4926
4925
4924
0
20 40
60 80
100
Station (ft)
Clydesdale Park - Swale
Plan: AsBuilt-FuIlLength 8/15/2006
RS = 1026
035
— .035 -.035 —
492
Legend
a
WS CP+VG
4928
�sewaj�
WS CP
Ground
•
Bank Sta
r
4927
x
c
O
_N
W
4926
4925
4924
0 20 40
60 80
100
Station (ft)
Clydesdale Park - Swale
Plan: AsBuilt-FuIlLength 8/15/2006
RS = 990
035
.035 .035
4928.0
Legend
WS CP+VG
4927.5
WS CP
l �iC�GWa� K
Ground
4927.0
��
`�`�i!
•
Bank Sta
4926.5
c
4926.0
d
w
4925.5
4925.0
4924.5
4924.0
0 20 40
60 80
100
Station (ft)
Clydesdale Park - Swale
Plan: AsBuilt-FuIlLength 8/15/2006
RS = 900
035 - --
.035 -�5035
4928
Legend
WS CP+VG
r�
WS CP
4927
�j ,
'
Ground
•
Bank Sta
4926
c
0
a
m
W
4925
4924
4923
0
20 40
60 80
100
Station (ft)
Clydesdale Park - Swale
Plan: AsBuilt-FuIlLength 8/15/2006
RS = 800
.035 --- —
.035 -1.035
4928
Legend
WS CP+VG
4927�—
WS CP
_2NiC2>
Ground
•
Bank Sta
4926
0
iu
W
4925
4924
4W3
T
0
20 40
60 80
100
Station (ft)
Clydesdale Park - Swale
Plan: AsBuilt-FuIlLength 8/15/2006
IRS = 700
035
.035— .035
4927.0
Legend
WS CP+VG
4926.5
wS CP
f
Ground
4926.0
>
•
Bank Sta
c
4925.5
0
w
4925.0
4924.
4924.0
4923.5
0 20 40
60 80
100
Station (ft)
Clydesdale Park - Swale
Plan: AsBuilt-FullLength 8/15/2006
RS = 650
035
.035 'i'.035�
4927
Legend
WS CP+VG
4926
WS CP
41 C:�� ��'k
�-
er�c�L>
Ground
•
Bank Sta
4925
+K
4924
e
w
4923
4922
4921
0 20 40
60 80
160
Station (ft)
Clydesdale Park - Swale
Plan: AsBuilt-FuIlLength 8/15/2006
RS = 600
•035—�I�---
.035
---+-.035�
4927
Legend
WS CP+VG
4926
WS CP
Ground
Bank Sta
4925
+r
c
a
4924
m
w
4923
4922
4921
0 20 40
60 80
160
Station (ft)
Clydesdale Park - Swale
Plan: AsBuilt-FuIlLength 8/15/2006
RS = 500
IE 035
.035
4927
3
Legend
5
WS CP+VG
4926
WS CP
Ground
•
Bank Sta
4925
S`
�1
x
c
4924
w
4923
4922
4921
—.
. .
0 20 40
60 80
100
Staton (ft)
Clydesdale Park - Swale
Plan: AsBuilt-FullLength 8/15/2006
RS = 400
035�" --.035
--
4926
0
3
Legend
5
WS CP+VG
4925
1
) Sidewalks
WS CP
GronU d
•
Bank Sta
4924
x
c
0
m
w
4923
4922
4921
0 20 40
60 80
100
Station (ft)
Clydesdale Park - Swale
Plan: AsBuilt-Full Length 8/15/2006
RS = 300
.035 —-- — .035
- 035 —�
4926
Legend
WS CP+VG
WS CP
4925
Ground
�
Bank Sta
4924
c
m
w
4923
4922
4921
0 20 40
60 80
100
Station (ft)
Clydesdale Park - Swale
Plan: AsBuilt-FuIlLength 8115/2006
RS = 200
035 ——
.035 '' .035
4928
Legend
WS CP+VG
4925
WS CID
Ground
jam— G�
Bank Sta
4924
m4923
m
w
4922
4921
4920
Tr-
0
20 40
60 80
100
Station (ft)
Clydesdale Park - Swale
Plan: AsBuilt-FullLength 8/15/2006
RS = 100
035 .035 '� .035
4925
Legend
WS CP+VG
WS CP
4924
Ground
•
Bank Sta
4923
c
0
m
m
w
4922
4921
4920
0
20 40
60 80
100
Station (ft)
Clydesdale Park - Swale Plan: AsBuilt-FuIlLength 8/15/2006
RS = 50
035
.035 +- .035 -�
4927
Legend
WS CP
4926
WS CP+VG
Ground
4925
�PJ�(1C.?,�
Bank Sta
4924
w
4923
4922
4921
4920
0
20 40 60 80
100 120 140
Station (ft)
Clydesdale Park - Swale Plan: AsBuilt-FuIlLength 8/15/2006
IRS
035.035
.035
4925
Legend
WS CID
4924
WS CP+VG
Ground
Levee
4923
•
Bank Sta
4922
m
w
4921
4920
491
0
20 40 60 80
100 120 140 160
Station (ft)