FLOOD04702

• Designation Number: 347
• County: Jefferson
• Community: Unincorporated Jefferson County
• Stream Name: Upper Lena Gulch
• Basin: South Platte
• Title: Flood Hazard Area Delineation - Upper Lena Gulch
• Date: 1/1/1993
• Designation Date: 9/1/1993
• Floodplain - Doc Type: Floodplain Report/Masterplan

I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I

Table 6-6

Floodway Table

Apex Gulch

LOCATION FLOOOPLAIN DATA I-FOOT RISE FLOOOWAY DATA D.5-FooT RISE FLOOOWAY DATA
lDo-n DATA lD-n DATA 50-n DATA 500-YR DATA DISTANCES LOOKING DOWNSTREAM DISTANCES LOOKING DOWNSTREAM
DIS- THALWEG FLOOO MEAN F.P. DIS- FLOOO DIS- FLOOO DIS- FLOOO FLOOOWAY WIDTH FLOOOWAY MEAN FLOOOWAY WIDTH FLOOOWAY MEAN
SHT RCH SECT. CHARGE ELEV. ELEV. VEL. WIDTH CHARGE ELEV. CHARGE ELEV. CHARGE ELEV. LEFT RIGHT TOTAL ELEV. VEL. LEFT RIGHT TOTAL ELEV. VEL.
1/ 1/ 1/ (CFS) (FT) (FT) (FPS) (FT) (CFS) (FT) (CFS) (FT) (CFS) (FT) (FT) (FT) (FT) (FT) (FPS) (FT) (FT) (FT) (FT) (FPS)
15 A-I .002 700 6096.0 6101.2 9.5 170 500 6099.1 t350 6100.6 4500 6103.6 40 30 70 6101.2 9.5 40 30 70 6t01.2 9.5
15 A-I .952 697 6105.7 6tt5.1 9.6 370 175 6112.9 485 6114.5 900 6116.0 15 15 30 6115.2 9.4 15 15 30 6115.2 9.4
15 A-I 1.552 697 6108.6 6115.4 8.8 420 175 6112.9 485 6114.5 900 6116.2 10 10 20 6115.4 9.2 10 10 20 6115.4 9.2
15 A-I 6.062 697 6t33.9 6137.4 8.0 30 175 6t36.6 485 6137.1 900 6137.7 * 6138.6 9.6 * 6138.6 9.6
15 A-I 7.602 697 6150.0 6t51.8 5.6 65 175 6151.4 485 6151.7 900 6151.9 15 15 30 6152.8 8.6 15 20 35 6152.6 8.0
15 A-I 8.502 697 6150.0 6154.5 8.3 25 175 6153.5 485 6154.2 900 6154.8 15 10 25 6t55.9 9.5 15 10 25 6155.8 9.6
15 A-I 11.102 625 6t73.6 6179.8 7.7 20 155 6t79.0 435 6179.8 900 6t80.4 to to 20 6181.1 9.3 10 10 20 6181.1 9.3
t5 A-I t4.942 625 6208.8 6212.5 7.3 30 155 6211.9 435 6212.6 900 6213.1 15 5 20 6213.8 8.7 15 5 20 6213.8 8.7
15 A-I t5.352 625 6211.0 6216.2 5.8 50 155 6215.1 435 6215.9 900 6216.4 10 10 20 6213.7 9.9 10 10 20 6213.7 9.9
15 A-t 18.582 625 6236.1 6237.6 7.2 20 145 6237.1 400 6237.4 800 6238.1 15 0 t5 6239.3 10.1 t5 0 15 6239.2 9.6
15 A-I 2t.302 625 6259.4 6261.9 6.7 310 t45 6261.5 400 6261 .7 800 6262.3 10 10 20 6263.1 9.5 10 10 20 6263.1 9.3
15 A-t 21_802 625 6261.7 6266.0 7.9 240 t45 6264.6 400 6264.8 800 6265.2 20 10 30 6264.2 8.8 20 10 30 6264.1 9.2
15 A-I 22.302 550 6263.6 6267.t 7.8 t60 135 6265.6 380 6266.6 700 6267.5 20 20 40 6267.t 7.9 20 20 40 6267.1 7.8
15 A-I 24.252 550 6270.0 6273.0 7.6 40 135 6271. 7 380 62n.6 700 6273.3 20 20 40 6273.0 7.6 20 20 40 6273.0 7.6
15 A-I 25.102 550 6274.0 62n.6 7.7 40 135 6276.2 380 62n.l 700 62n.9 20 20 40 62n.6 7.7 20 20 40 62n.6 7.7
15 A-t 28_752 494 6310.0 6314.4 7.4 40 125 63t3.1 345 6313.9 700 6314.8 30 10 40 6314.4 7.4 30 10 40 6314.4 7.4

25