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1996-4618 G Street Address cg / ~c¡ Category I Vf;zJ & B Serial # 15 -!&C( /llUP I Description Name Plan ck, # I qq s- Year recdescv I I I I I I I I I I I I I I I I I I I . . DRAINAGE STUDY FOR SEACREST VILLAGE /---\ "" \ " \ ,-',,' I / NASLAND ENGINEERING APRIL 15, 1996 JOB NO. 194-057.3 " r~) Œ Œ5 ~ u w ~[]J'1. ' 'tJ u <.J , APR 1 6 1996 ENGINEER!NC:~ SERVICES CITY OF ENCINITASr I I I I I I I I I I I I I I I I I I I . TABLE OF CONTENTS ITEM 1, ON SITE HYDROLOGY 2, HYDRAULIC CALCULATIONS 2, 10 YEAR 6 HOUR PRECIPIT A nON 3. 10 YEAR 24 HOUR PRECIPIT A nON 4, INTENSITY DURATION DESIGN CHART FOLDERS: 1, 20 SCALE ON SITE HYDROLOGY MAP . PAGES 1-4 5 6 7 8 I I I ¡¡!"'i!'ifi!' : ~~a~~ """"""'" I', I'uLt., ww :~~~n """"'°13 ~~~~dd , ~~~~~ I'~ê~ê§ < ; ¡j~~~~ ~ c ,,~~~~ I I J I I ~I~ I I) I I I I I I I .) I I I-ARE8 A: I 6ft: In - Iq/, ìG.: I, 2<¡- I Ii L = eJ IO~' = O. ()2. M ¡ l' Co:' ('J!/i L3),38~ '(II, 'f (O2Y3.).3~ H t.Zt -.b~ 7.= 7.44?þ D = 3-117- Io/J,v- 'Pþ:; I. (p j Y) ~\J~ /. 5þ ~IV'\ ') ~ ~\~ ~ ~ c. = o. 7 .' Pt,:: .II~ ex = c...r4 := (. ìX ~-:ì~ 't, / I) = ð;Z~ c..ç~ ~ ~ Ii ~ 1'13 - 1'12 ~. I L=-. 90' ~ Q.OI7~ì Tc.. -= I. 9-0 fYI' :r == ""$'. ì I? I 0 = o. ~<) c..ç.~ A-(;2..EA t: ~ H ~ /9 ~ - /72./ ': ,9 L:. 4S '= Ú, DO 8S- M ¡' I Tt. -= 0, ~l¡? ~ I Vî ") \j~~ To:. 3..\r:, P1/hV"' t= ,7 --&-:: .OS-~ : G. '::: (). 13 ~ ~s ~ "C) r-"' '\ .....J .J! I ~ I 1 II I r~ en) . . - AREA D~ 6. t\-: ,Q3 - 141. (p t:: /. 86 , , L-:: (Óf>' ::: 0.0'/3,..'- T~::: Ò. Cf 2. MIV') ~ ~",I'\J M\~ -- I_-::.- :'?]~ 1-h/h'C_.-: ' , : ~~, ."- ' , ' c...-= ..7 ð= . 05' o..c, . ex'; '0:: \3'¿+~ - . - - ; , , -'" -, ~, " . '=E A' E ' : ",- . " . ::t4:i~í.:í'5'~5'~=--' r~-;~~. $C-=~-~ ,¡- ---'", ' ¡ - - -~'.- ; , :,,:: ': .':' ,::. ð:o (oq.. ,~,':- -'-<,v', , ,,' ¡-- ~:'::. o. ¥J ~I '" ' , ~ \9,fa '\"\ c---J' x::.-~,lC; ;/,n/hY . , -_.~-"- - -, , - G=:;. 7 11-:: (j.,2.. ~ Q ~ 0.I?~ G+~ -A~EA . . ~ rt :: 1'15' - I~ 2. 7 = , Â. ~ ' , L=, ,,'-Zb~" ~ ,~:i:64-7.XI; ~\ .. - ,-" ---...,,---- ' Tè-= ê.. Q)~, '(V\\'~ --') ,\.t>,~ I::. ~/.\, ~/~' -_uP c:-= '0.\" ~: ~~l A~ '~~:-: -'-'""1 ~ ~~ ~ "'-- ---,-- '\"'.,(..j I . --' -- 1/ I- I I . h\'\-~ 6 ~ ; ß~ ':.. \c\",.~c,- \~-z,..,,)t,:... "Z.""}\ , 't'" \ L.,=- \7'0 I ~~~~~ \' Co. ~ \o~ 0 'yv'.\ r-J j~~~~ I'.'~.:.';'.<.~~.'~ ~ ~ "S.1 ~ \~¡~ ~E¿~~ ."""",~'j ~~~~~ ~~ ~,,\ I 5<r~ê~ ~ ~~~~~ J F\ ... ~ :~{) ~ Co. I ~ I I ~I< I I} I I I I I I I I ) I &~ \:)..'7~ c...~ ~ ~-_: ~\~~ lo..~ ~\rJ, ~ ~ ë;. \~ \~/~ è...- ~ Ð..j f\~ O.'?> CS¿~ \.';;.\ ~~~ ~ -..A- -:L. : I , \"' c... -=- LP . \) '(Y\ \ ('.1 -:'L:=- -;.ì ~ \ ~ j ~ ~~ ~.\ 'A ':.. o. ~ Õr 'A<:... Q ~ o. \\ c.,~~ ?:. I I II I I I I I I I I I I ) I I ~ J: ,,- \0. \) :i ~ ;, ~IS ~~ 0-1 ~ :=--- \JL\) ~ ß L "; , , , Q:::... Q /?A C, K 'M\c-.J \r~~ ~,.. "y« :.' , ! "-\ ¿~ 19.,Q ~\~ -X; :,-~.Js.~j~~ & ~rf ", ,1:;1; '; _..~. : (~:,.':-;;_.O:'" .:'. ': . - Är~";'¿;'~~I' ex:£ ;:vi~ '.~ ,., .. ... .._-- - aa, ..-.. _... --.---.-.. - ... -- -... .. - -- .. ~ --.. ..-. -.- . , , ! ' , ..'- -.. -- -. Hydraulic Area --1 Radius (sq ft) i R (2/3) i P1 T 0.13 0.50 i 1.1 -L 0.012 I 0.20 I 0.25 P2 0.26 0.50. 1.1 I 0.012 0.20 I 0.25 r -j-- P3 I 0.79 0.50_+__~~- -I - 0.012 I 0.20 0.25 P4 0.79 0.50, 1.7 I 0.012 I 0.20 0.25 P5 0.79 0.67 ~---~~-~r-<fQ~~J~ 0.35 0.30 P6 1.97 1.00 ¡ 1.0 ¡ 0.012 0.79 0.40 . P7 3.36 1.00 ¡-flfn-rÕ:Õ12 0.79 0.40 -..-. . --c---.--. -j------ -.- - P8 3.36 1.00 1.0 I 0.012 0.79 0.40 P8A 0.29 0.50 1.1-' 0.012 r 0.20 0.25 P8B 0.50 -0.50 3.1 _: Q.O12~I--Õ.20_L_0.25 , I P9 3.97 1.00 24.2 O.O_!..~ I 0.79 I 0.40 P10 3.97 I 1.00 I 2.0 0.012 I 0.79 ! 0.40 I I - I P11 3.97 1.00 3.1 noL 0.012 i 0.79 "- 0.40 P12 3.97 1.00 16.7 0.012, 0.79 0.40 ----.i.-- . P13 I 1.76 0.83_+. _1..2 0.012 i 0.55 0.35 P14 i 2.29 1.50 I 1.0 : 0.012 i 1.77 0.52 5 SEACREST VILLAGE HYDRAULIC CALCULATIONS , . D (8/3) ;I(~j;) () /-0 ~~ K' pz-~ 0.16 i 0.10 0.64 0.20 0.094 0.306 0.16 To.10-0.64- - 0.41 - 0.189 I 0.445 0.16 -~.- 0.14 0.86 LO.~~- 0.426 I 0.755 ~-..2:~-1 0.79 _L_1.0~--1 0.462 i 0.817 0.34 0.11 1.43 0.55 0.255, 0.530 - ---------T ----_.~---- 1.00 0.10. 3.86 . 0.51 i 0.236 0.506 - .--.J..... ;--.1 1.00 0.10 -- 3.86 --~- 0.87 i - 0.403 O.~~ 1.00 0.10 3.86__~- 0.87 . 0.403 0.722 0.16 0.10 0.64 -+._0.45 0.211 0.47~ 0.16 0.18 1.07 I 0.47 0.216 0.480 I -~-_.. -~-- 1.00 0.49 18.99 i 0.21 0.097 0.310 1.00 0.14 5.46 0.73 0.337 I 0.632 --+-- 1.00 0.18 6.80 0.58 0.271 0.549 ~i 0.41 --:1.§.:.~----~ 0.25 i 0.117 O.~~ 0.61 i 0.10 2.37 0.74 0.343 0.641 2.95 i 0.10 I 11.38 n; -0.20 ; 0.093 0.304 Page 1 Theta I ~.937 ¡ 3.363 2.070 1.766 3.021 3.116 2.223 2.223 3.249 3.220 3.919 2.606 2.943 i 3.785 -: 2.571 3.946 Area of ¡ Wetted i Hyd Rad Flow-¡ Perimeter: of Flow I "1 R (2/3) 0.05 - j-~; 0.20 2.55 0.08 i 0.73 ¡ 0.24 3.08 0.16; 1.05 0.28 I 4.97 0.17_- 1.13 0.28 1 4.60 0.19 1.09. 0.31 ~ _nt' __0.40 J --~1 0.40 4.94 r--- 0.61_4-~.03 -+- 0.45 [~ I 0.61 I 2.03 ' 0.45 : 5.54 ----1-.-. 1- I 0.09 .--1.- 0.76 n;..__Q-?4 i 3.17 0.09 0.77. 0.25 l 5.36 0.21 . 1:18' 0.31 -I 19.12 j Q52"-;-T84- 0.43 ~l 0.44 -~_. 1.67 - T-õA1--1-~ ! 0.24 I 1.25 0.33, .-1S.Z2 0.37 : 1.55 0.38 4.76 0.45 ,- 1.75 0.41 5.04 April 15, 1996 Job No. 194-057.3 \,Ielocity (check) (Q/A) 2]5 3.08 4.97 4.60 4.20 4.94 5.54 5.54 3.17 5.36 19.11 7.58 8.98 16.73 4.77 5.04 - - I ...... :=> >--' Iv 7' ,.;;,. c.: ~ >-' \.0 \.0 VI - - - - - - - Cowny OF SA" DIEGO DEPMTtlE/lT OF SAlIlTATIOIt t- floOD COI/TROl liS' - )0' "T ~. '"'1 (b IS' >--' :=> -:¡ 33. 115 ' p".,.. d br U.S, DEPARTME~T Of COMMERCE tlATV"'AL OCEANIC A:tO A1 :IIS.'II(",C An..'tlISTRATlOrl SPECIAL ITUOI[l DNANCII. orr'CE or, "UROI.COY. ""TlOHAL "EATIIER S~RV\C!: 30' - I I 1188 liS' - - - - - - - - - .~ J()' IS' 117. 151 116. APPI!NDIX XI-C liS' )0' nnv\scll 1/8S - - . . - ....... a -1~ VI 7 ""'" ",' ~ ....... \C '" VI - .,.., ciQ' c:: .., (þ ....... 9 ....... a - - - - - - - - - - - - - - - "'-V . COUNTY OF SAN DIEGO. O£PARTtIWT OF SANITATIOIl s- flOOD COIlTROL ))8 'IS' IS' - 451. "'.,1,.. ~, U,$, DEPARTMEI/T OF COMMERCE HATlOllAL O!:EAHIC AND A11()~I'II~RIC AD""'ISTAATlOIi SPECIAL nuolu UAANCII. D"flCE 0.' 1f>'OIlOLOCY. tfATIOtfAL WEATII!R SLAVIC!. 301 ,. . 110. '15 I )0' 117. 15' 'IS' 301 151 1'0' ,; ....,1 I lOr: ',.p,"""" V' I' - - . . - - - - - - - - - - "¡~v ....... L ;] ::!1 E (]Q ...... )) ~ c:: VI 0 ""1 '1 (þ ..r::: ~ U ~ ~ c: 9 0\ 7' ...:::... ~ ':< ~ \0 \0 Ul .s "I-I. 1.1. [ .cj~I~II~;~;:::" '" ,I ,.. -: ~:'" " - Q. :; -'-h,., I I. .... ~ .lfJLEI Lt... >- "'0 "'0 1-1-1-1-1-' I.'.'. IT'I Z ~ 1:.::l:ITI1IJ,. )-( :.-< .1 .... ~. )0 J5 20 30 40 50 1 2 J ~ 5 6 - - - - - - - Directions for AppJication: I) From precfpl tatton naps detennlne 6 hr. and 24 hr. amounts for the selected frequency. These maps are printed fn the County '~drol09Y Ifanual (10, 51) and JOO yr. maps Includ~d in the Design and Procedure lJanual). 2) Adjust 6 hr. precipitation (ff necessary) so that It fs wlthl~ the range of 45% to 65% of the 24 hr. precipitation. (Uot nrrlicable to Desert) I Pl~t 6 hr, precipitation on the riD~t side of the chart. 4) Draw a line through the point parallel to the plotted Hnes. . 5) Thfsllne fs the Intensity-duration curve for the location being analyzed. Applicatfon form: 0) Selected Frequency yr. . 1) P6 = ~fn.. PZ4= 2. 6 . P6 = J2b...'I." P24 In. 2) Adjusted .P6"' I. b J) tc: min, 4) 1= in/hr. *Not App)fcable. to Desert Region , - - . .. NoText