FLOOD06450

• Designation Number: 92
• County: Jefferson
• Community: Arvada
• Stream Name: Ralston, Leyden Creeks
• Basin: South Platte
• Title: Major Drainageway Planning - Ralston/Leyden Creek, Arvada, Jefferson County, CO
• Date: 8/1/1977
• Designation Date: 1/1/1978
• Floodplain - Doc Type: Floodplain Report/Masterplan

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Reach
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LEYDEN CREEK

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(Continued)

Locat ion

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Ra I s ton Conf I uence to 74th Ave, (Arvada)

Existing channelization and minor
channel encroachment allow for investi-
gation of non-structural and soft lined
channel solutions

74th Ave. to Alkire St, (Jefferson Co,)

Minor channel encroachment allows .the
use of soft lined channels

Alkire to State Highway 93

Open rural areas allow for
structural alternatives

(Jefferson Co. )a)
b)

non-

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A I ternat i ves

a)
b)

Status Quo Alternative
Status Quo (flood plain)
approach with I imited struc-
tural improvements
Grass-lined Channel
Nonstructural Strategy

c)
d)

a) Status Quo Alternative
b) Status Quo (flood plain)
approach with I imited struc-
tural improvements
c) Grass-l ined Channel
d) Nonstructural Strategy

Status Quo Alternative
Nonstructural Strategy