Aqueduct Systems COPY Flashcards
What field division has the widest canal?
San Luis
What is the purpose of the aqueduct?
Storage and conveyance of water
What is velocity?
Distance per unit of time.
What is Q?
The flow rate per unit of time.
CFS
How thick is the aqueduct liner?
4 inches
How thick is reinforced liner and what adds to its strength?
Reinforced liner is 6 inches thick and has rebar.
What component sends aqueduct info to ACC?
A differential pressure transmitter.
What 4 purposes does a check structure provide?
- Controls water flow
- Controls water elevation
- Separates segments of the aqueduct.
- Emergency Isolation
What do all check sites have?
SEG’s
A pitot rod is used to measure ________ in a pipe.
Velocity
How wide is the lip of the liner?
12 inches
Name all generation plants in state water project
- Gianelli
- Warne
- Alamo
4.Mojave - Devils Canyon
6 Thermalito
7.Hyatt
Castaic cooperative ladwp
Name two sections of the aqueduct that have a reinforced liner?
- The Thermalito Power Canal
2. Wind gap pool 36
Who gets turnout water
29 water contractors
When did construction of the SWP begin?
1957
How much water can the SWP deliver at full capacity?
4.2 million A/F
Name the three headwaters to Lake Oroville?
- Frenchman Lake
- Antelope Lake
- Lake Davis
How many pools are there?
66
What is the purpose of the canal lip?
It let’s surface water drain into the canal without sleeping behind the lining.
Where is the berm located?
Between the road and the canal
What is an invert, and what is it’s slope?
The invert is the bottom width of the canal and it slopes 4’ per 100,000 ft.
What is free board and what does it provide?
It’s the distance from the top elevation of the water to the top of the lining.
It provides a safeguard against:
- Sediment buildup
- Wave action
- Storm flow that may exceed design flow.
How far apart are safety ladders and maintenance ladders?
Safety ladders are every 500’ staggered or 1000’ on the same side.
Maintenance ladders are every 5000’ and are placed downstream of concrete structures.
Safety cables (aka buoy’s) are located where?
Upstream of check sites, pumping plants, and spillways.
Downstream of bridges
Describe drawdown criteria? For San Joaquin
The first 6” of drawdown may occur in one hour, with the next 1 ‘6” occurring uniformly over the following 23 hours.
What speed do radial gates move at?
1 ft./min
How many float wells are located in a pool? What are they for?
Two.
One upstream and one downstream.
To measure water levels in canal.
Who is the largest water contractor?
Metropolitan water district.
Where is the most narrow of the aquaduct
Coastal
What is the Delta water charge?
It’s the cost per acre foot of water used for the purpose of water conservation in, above, and below the delta.
All contractors pay the same rate.
What is the Transportation charge?
This charge includes the costs incurred by the transportation facilities while delivering water to the contractor.
The contractor is responsible for paying for all the costs in his respective reach.
What are protection components of an SEG
Cranking limiter
Emergency trip device
Overload protection built into breaker
What do checksites do?
Regulate flow
Control elevation
Pool isolation
What do checksites do?
Regulate flow
Control elevation
Pool isolation
What are duties of water operations
Perform routine inspections.
Make schedule Q changes.
Reporting and recording data
Perform ACC tasks
Where are Mile markers?
Every half mile.
Check structures
Cross structures
Bridges
What should you do when you enter a check site?
Call ACC
Where is freeboard?
Top of water to top of lip
Coverts and siphon are used to protect from what type of flooding
500 year storm
Purpose of the concrete liner?
Reduce erosion and friction
What is the relationship between presure and velocity
They are inversely proportional to each other
San joaquin gates
4 with 4 gates
11 with 3 gates
All 20 ft wide
