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- Interconnected Detention Basins
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Studies - Regional Watersheds
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WEI has performed many regional watershed hydrological and hydraulic drainage studies for cities, counties, and drainage and flood control districts. Conditions range from mountains to rocky mountain slopes, flat lands and deserts, urbanized and rural areas, and wetlands and marshes. Analyses have involved stormwater collection and conveyance systems and detention facilities, and the updating of masterplans.
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Fortuna Wash Bridge, Yuma Cnty, AZ
Analyzed runoff from a 23 square mile
area and hydraulics through a proposed
county bridge and existing interstate
bridges over Fortuna Wash. HEC-1 and
HEC-2 computer programs were utilized.
Colorado National Monument, Mesa
County, CO
Prepared hydrological models and studies
for 6 canyons coming off the rocky steep
Monument under flash flood with high
sediment load conditions, evaluating the
hydraulic conveyance through natural and
man-made channels on the base slopes.
Performed erosion controlevaluations and
provided recomendations.
Sundance Crossing, Grand Junction,
CO
Evaluated and critiqued previous
subdivision studies, and prepared a
regional hydrological and hydraulic
drainage study that encompassed the
subdivision. Included multiple
interconnected detention basins.
Grand Mesa Center: Lot 6 Addition,
Grand Junction, CO
Re-evaluated Grand Mesa Center
Regional Detention Basins for adding
runoff from add'l area. Basins consisit
of three interconnected detention
basins. Grades are such that each is
affected by downstream pond
"tailwater" conditions and flows can be
both directions between ponds depending
upon the time period in the runoff event.
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Orchard Avenue Storm Drain, Grand
Junction, CO
Performed hydrological analysis of the
Logan Drain system, and modeled and
designed a proposed drainage system
with up to 60" outfall pipes.
Elusive Acres, AZ.
Analyzed a 21 square mile watershed
and calculated floodplain limits for flows
exceeding 11,000 cfs using SCS TR-20
and HEC-2 computer programs.
Linden Ave. Subdivision, Mesa Cnty,
CO
Updated the Orchard Mesa Stormwater
Management Master plan with respect
to Linden Avenue subdivision, and
provided subdivision drainage study.
32.5 Road Regional Watershed Study,
Mesa County, CO
Performed regional basin-wide
stormwater hydrological study and
evaluated detention basin feasibility
and requirements.
Cotton Woods 3 Subdivision, Fruita,
CO
Performed a hydrological and hydraulic
study for the subdivision and the entire
Murray Drain system, updating the City
of Fruita and GJDD SWMMP.
Powder Ridge Development, Mesa
County, CO
Performed hydrological and hydraulic
drainage study for a mountain
subdivision near a ski resort. Included
wetlands and springs.
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