20180925 Ver 1_750416 2014 SF750416 MUDDY CREEK EAST TRIB SR 1911_20180703

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URBAN BLUE RIDGE-PIE�MONT �FFnna FI.�WS
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USGS FACT SHEET 007-00
"""""""""""o.Y34__"o.d86--__'____________________'____'_______________________________________________'__'_'__"'___'__'
U2= 33.3 (0.84) (35) = 336 = 340 cfs
' """'_ _"""""0681 ""05�2." ""' '_"""" _"'..-..." """'_"
U5= 78.9 (0.84) (35) = 535 = 550 cfs
_"'____"__'"'__"'""0655 "'"0.515""""'_""__'"_"'"'_""'_'"'""'_""""""'_'"_'"'""'"""'"
U�o= 122 (0.84) (35) = 679 = 700 cfs Q10 = 691 cfs
-------- -------- ------------ - ----- ---- ----
_______- U611 0.436 ---__ ___ ______ _______ __ __ ___ _______'"_____
UzS= 228 (0.84) (35) = 966 = 1000 cfs
- --._.----- ---------------- ---- --- -- ------ -- - -------- -----------------------------------------
0.604 0.396
USo= 296 (0.84) (35) = 1089 = 1100 cFs Q50 = 1140 cfs
--- ------ - --------------------------------------------------------
0.593 0.358 _ _ __ _____ ________ ______'_____..
U�oa= 374 (0.84) (35) = 1204 = 1200 cfs Q100 = 1270 cfs
----------- • --------------------------------------------- ------------------------•---------------------------------------..
USoo= 1.8(U50) = 1.8(1089) = 1960 = 2000 cfs Q500 = 1640 cfs
FEMA dischar�es are approximately equal to USGS FS 007-00 discharges� Therefore FEMA discharges will be used.
SITE DATA
Drainage Area ---------_-0_84 sq. mi-------------- Source .--_--------------_USGS QUAD MAP
River Basin .............. CAPE FEAR __ __ Character URBAN
- - - - ------------------------------------------------------
(RANDLEMAN LAKE WATERSHED)
Stream Classification (Such as Trout, High Quality Water, etc.) ....................�."!5-1V. *
_______'_'__________
Data on Existing Structure 1@18' TIMBER DECK ON TIMBER BEAMS AND TIMBER ABUTMENTS (ib' BRG:OPEN.)
Debris Potential: Low______Moderate.__ X_...High___..__.
Data on Structures Up and Down Stream ...____,___.UPSTREAM: ROCKLANE DR,2@72'x5_b'CMAP_____________
_ DOWNSTREAM; I-85, 9'x7' RCBC
-------- -------- --- ------ -------- - - ------- --------- ------ - -- -.._._...._.._.
Gage Station No ..............wA_..__.__..___. Period ofRecords hVA Y
- _. .-----�---------�--------------------- rs.
Max. Discharge ------------wp------------ c.f.s Da1e -----------�:�!A------------ Frequency.--------IWA
Historical Flood Information:
Date----2011_._ Elev.._783,4_.ff.Est. Fre ��--- ------- Period of
q. ... _ yr. Source _____JAMES CARRELL-RESIDENT Knowledge__ 5Q_.yrs.
--------- ----------
Period of
Date-------.___. Elev.----------ff.Est. Freq.----_..yc Source ------_- -------- --------- ---------Knowledge-------yrs.
MAINTAIN OR IMPROVE EXISTING LOS
Allowable HW Elev ...............AND 100YR WSEL_ _ ft. Normal Water SurFace Elev. _.___ ��?_?___._.ft.
Manning's n: LefF O.B. ��12 FIELD SURVEY
.,. ..____ Channel 0_OS _ Right O.B. _.���? Obtained From _.___& FIS
---.._....
DETAILED METHODS: REVISED OR NEWLY STUDIED Non-Encraachment
Flood Study /Sfatus _.___.__(FIS EFF. DATE_ VL2008, REVISED 3iINL009)____..__ Established? YES
Flood Study 700 yr. Discharge __ 1?70__�.f.s.; WS Elev.: With Floodway. �$5.2_ {p. Without Floodway _786.2 {}.
@River Station 75778.7
DESIGN DA7A (Fes Crass se�t�on �5s)
Hydrological Method ..................USGS FACT_SHEET 007-00 URBAN BLUE RIDGE-PIEDMONT
- - - -'- � - - -
Hydraulic Design Method ___________ __HEC RAS 410_(SF750416_MUDDY CREEK EAST TRIB SR1911�
Design Tailwater � Q�o ----5=5-----fr•% Qzs --------.ft.; Qsa ---6=2---ft�%Qioo ---6.4.__fi.; Qsoo -'---6=8------.ft.
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Is a Floodway Revision Required2 ___.___, NO, MOA _TYPE_7__.._.___
OutletVelocity (V�o) ____________3_9______....._f.ps. Natural Channel Velocity (V�o) 4.0 p_
--------------------------
Required Outlet Protection ______________________________________CLASS 'I' RIP-RAP S
INFORIVIATION TO BE SFiOWN ON PLANS
WS E ev. Ta cen @ River 5tation 15579.
Design: Discharge -----691-----. c.fs. Prequency.---------�9---------.ye. Elev. -----------783,1--------$.
Base Flood: Discharge ---- 1270----- c.fs. Frequency.-------._100--------Yc Elev. ------_--784A4_-_---- ft.
Overtopping: Discharge ___._ 691___.__ c.f.s. Frequency.._._____.1�____.____ yr. Elev. _________ 782�8
OVERTOPS ROADWAY ft�
@ STA. 11 + 67 -L-
CULVERT SURVEY � HYDRAULIC DESIGN
N. C. DEPARTMENT OF TRANSPORTATION
DIVISION OF FIIGHWAYS
HYDRAULICS UNIT
RALEIGH, N. C.
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REPORT i�a;.�ee�
I.D. No.----SF-750416---- Project No. ----------17BP,S,R,76---_----. Proj. Station -----_---12+81 -L-_----_--
County .______ R?NDOLPH Strearn _._____.___MUDDY CREEK EAST TRIBUTARY Stru. No.._..416
On Highway. SR_ 1911 - ASHLAND ST: Between US 311 -_ N, MAIN SL and NC 62 -_ LIBERTY _RD. __
Recommended Structure 2@ 10' X 6' RCBC w/SILLS & BEVELED HEADWALL
----------------------- --------------- --------�---------------------------------------
--------------------------------'---------'-----'-----------------------------------------------------------------'------
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.o�' Recommended Width of Roadway-----------_--_-----39' SP-SP---------------------- Skew .-------90_ DEG.
v; ----------�
�; Recommended Location is (Up At, own) Stream from Existing Crossi�g__________________ AT _
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LL Statewide Tier ❑ Regional Tier ❑ Sub-Regional Tier �
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� Bench Marl< is ______ BM #1: -BL- STA 6+87:00, 61 FT LT, RR SPIKE IN BASE OF 15 IN SWEETGUM TREE
�' ------------------------------------------------------------------ Elev. ----781_40----fP. Datum:-----NAVD 88
d: ------------
°D� Tem ora Crossin NOT REQUIRED
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}�; Designedby:--------.�NDALC.HOWARD,EIsPLS-,------- �I �/ `^��e,��ESS/��/9''^
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p�-; Date -'---�/" � �7 � ;�O G%
o�; Assisted b: BNE, RCH, JRH � � - �
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SUNGATE DESIGN GROUP, P.A. - - 9334 -
��, ProjectEngineer :______W.HENRY WE�$��R P.E. � ais�oxesmnxiamaano � ' rt ' �
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� ` . � NC COA No. C-0890 ' '' �" � N�-� `� �`
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� Reviewed by: Y`<< 5'F`' "' � �' `� � �� �
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