FLOOD04566

• County: Boulder
• Community: Boulder
• Stream Name: Gregory, Bear Can, Bluebell Can Creeks, Viele Chan
• Basin: South Platte
• Title: Major Drainageway Planning Volume 1, Part C
• Date: 9/1/1970
• Prepared For: Boulder County
• Prepared By: CWCB
• Floodplain - Doc Type: Floodplain Report/Masterplan

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Bluebell Canyon Creek

1. The old channel of Bluebell Canyon Creek east of 15th Street pre-
sently provides only esthetic benefits, and this function will con-
tinue with flood flows eliminated from this channel.

2. The decision to utilize street capacity for carrying flood waters
was made to reduce the size of the Mariposa Avenue conduit.

3. The planners felt that it was important to not disturb the land-
scaping adjacent to Baseline Road on the University Campus, and it is
believed that the plan has been successful in this regard.

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4. The channel paralleling 28th Street will provide many urLan drain-
age benefits to the University because It will provide a logical
outfall channel for future storm sewer systems. The channel also
makes the land east of 28th Street less subJect to flooding.

5. It is believed the 28th Street portion of the channel will provide
an excellent opportunity for a pedestrian way in a north-south
direction which can be tied to the Wellman Canal path, and then
to Skunk Creek and Bear Canyon Creek.

Skunk Creek

1. The plan for Skunk Creek provides a reasonable solution to the long
existIng flood hazard at the Environmental Science Services Adminis-
tration laboratories.

2.

The upper pond system with permanent pools will provide ESSA
with an excellent backyard recreational area and lunch spot.
excavated material from these ponds can be beneficially used
structlon.

employees
The
for con-

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3. It was concluded that channel construction through the cemetery would
be too complex and involved from the right-of-way standpoint to Jus-
tify work there.

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4. The extensive ponding on Skunk Creek upstream from the Turnpike is a
necessity If the existing box culvert under the Turnpike is to serve
Its necessary function without beIng '.nlarged or replaced.

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5. The channel work between Baseline Road and the Wellman Canal wi 11
require much care In the final design to obviate interference with
the existing development. A strong attempt has been made to minI-
mize the need for additional right-of-way in that reach. The lower
portion of Skunk Creek can provIde an excellent opportunity for a
hIking and bicycle path, and this path, when connected to the Wellman
Canal route and the Bluebell Canyon Creek channel will provide bI-
cycle and hiking connections between several portions of the C.U.
campus.