Protection of native fish has required modification of water intakes at major
hydroelectric projects to comply with Federal Energy Regulatory Commission
(FERC) and Clean Water Act (CWA) water-quality permits. Modifications
to current structures are often simple, requiring only installation of baffles
and gates to prevent fish from entering the intakes. At the Round Butte
Hydroelectric Project, located on Billy Chinook Lake in Oregon, a far more
innovative design was required.
The joint owners – Portland General Electric and the Confederated Tribes
of the Warm Springs – have committed to re-establishing the anadromous
fish runs above the dam and to meeting the water quality requirements of
the CWA. CH2M HILL’s selective water withdrawal system modifies the
surface-current directions for migrating fish so they can more easily move into
the fish-handling area, provides a fish collection system, and ensures that the
released water complies with water-quality standards.
Located in the middle of the lake, the system is comprised of a floating
platform of steel and concrete that selectively diverts water from specific
depths of the lake as well as diverting migrating fish from the turbine intake.
The design team developed a 3D model using MicroStation and TriForma
to visualize the design as it progressed, drive the engineering data, and to
coordinate and construct the components.
ALSO NOMINATED IN SPECIAL CATEGORY: SUSTAINING OUR ENVIRONMENT (WINNER)
United Utilities Water
Optimization Method and Modeling Tool for Leakage Detection in Water Distribution Systems
Warrington, United Kingdom
in the united Kingdom, leakage targets are a key part of a water utility’s
measured performance, with financial penalties incurred if targets are not
met. Therefore, it is imperative for leakage detection crews to identify leaky
pipes quickly so deteriorated water infrastructure can be proactively improved
to control water loss.
optimization method for parameter identification, fulfilling the purposes of
leakage detection and hydraulic model calibration.
United Utilities Water has developed a new leakage detection optimization
model in collaboration with Bentley for effective detection of the likely
leakage hotspots. This new approach solves a long-standing problem for
the water industry and enables leakage crews to immediately focus on
the identified areas for locating leaky pipelines. It provides an efficient
The model is formulated to identify a given number of leakage nodes and
corresponding emitter coefficients such that the model-simulated flows and
pressures match well with the field-observed values. It has been developed
into a software tool released with Bentley’s latest water distribution
computer modeling packages, WaterCAD and WaterGEMS. A thorough
benchmark test and evaluation have been conducted using a number of
United Utilities Water’s water systems in conjunction with Atkins Water and
ALSO NOMINATED IN SPECIAL CATEGORY: ATTAINING RETURN ON INNOVATION