BRAE 349 FINAL EXAM
Where was fluoride originally found? - ANSWERS-Colorado
Desalinization may be a new source of water for some coastal areas of the US
but there are still two significant challenges: - ANSWERS-Energy cost passed on
to the consumer and brine disposal/reuse
Why does urban water in the Los Angeles basin cost more than other urban
areas
like cisco? - ANSWERS-The water than moves to Los Angeles has to be
transported using expensive infrastructure (canals and pipelines for hundreds
of miles) plus the water
has to be pumped OVER mountain ranges using large amounts of energy.
A silk particle's diameter is: - ANSWERS-0.05 mm
How much subsidence has occurred at Mendota, California after groundwater
pumping? - ANSWERS-About 30 feet (according to Dr. Poland)
How much water is stored as groundwater in California (reservoir storage is
about 40 Million AF)? - ANSWERS-850 million AF
What is the lift (in feet) and combined horsepower of the Edmonston Pumping
Plant that moves water over the Tehachapi Mountains to Southern California? -
ANSWERS-1,926 feet and 1,120,000 Horsepower
,What is one of the biggest issues with the San Francisco Delta? - ANSWERS-
Seawater intrusion into Southern California's drinking water system after levee
failure
What percent of California groundwater is used as a key source of water in a
normal water year based on lecture? - ANSWERS-30%
Why is reservoir storage needed in California? - ANSWERS-Difference between
supply and demand of the snow pack/rainfall runoff water
When were the state water projects constructed in California? - ANSWERS-
1960s
Which statement is true? - ANSWERS-California's population grew by 700% in
the last 90 years. This growth rate is unsustainable.
What has the groundwater storage change been in the southern San Joaquin
Valley in the last 60 years? - ANSWERS-Decrease in groundwater storage of
over 60 million acre-feet, which is unsustainable
How did California miners in the mid-1800s get the hydraulic mining nozzles to
work? - ANSWERS-Hydraulic pressure from upstream water source
In an agricultural operation, water that moves past the root zone moves to the
aquifer. What happens to this water? - ANSWERS-It is typically reused by other
users in a basin (ag and M&I)
, According to the Randy Record interview, what is the biggest challenge in the
future for the sustainability/reliability for MET? - ANSWERS-Climate
change/variability
Does drip irrigation save water in most ag operations? - ANSWERS-No, it most
cases it will increase water used by 10-15%. This is due to plants doing much
better with drip irrigation. This translates to higher yields but the plants are
also transpiring more.
According to the lecture, NRDC/Pacific Institute posted a chart where ag is
wasting water in California. How much water did they claim that agriculture
users are wasting with poor irrigation practices? - ANSWERS-5.6 - 6.6 mAF
How much water is used in a "normal" year by the different users? - ANSWERS-
50% environmental, 40% ag, and 10% urban
According to Kimberly Brown, what is a key characteristic that makes a
groundwater recharge/banking facility a good investment to maintain the
sustainability/reliability for the southern San Joaquin Valley? - ANSWERS--
Beneficial in a dry year since the water cost can be about 10% of the surface
water cost to pump and use
-Evaporation losses are minimal compared to surface storage options. Only
10% is lost in the accounting due to the nature of keeping track of water
molecules
-Can take advantage of wet years when the surface water is very cheap
($25/AF) and use the excess water from a wet year for recharge
What is the primary water source for the Central Coast Region, according to the
California Water Resilience Portfolio? - ANSWERS-Groundwater
Where was fluoride originally found? - ANSWERS-Colorado
Desalinization may be a new source of water for some coastal areas of the US
but there are still two significant challenges: - ANSWERS-Energy cost passed on
to the consumer and brine disposal/reuse
Why does urban water in the Los Angeles basin cost more than other urban
areas
like cisco? - ANSWERS-The water than moves to Los Angeles has to be
transported using expensive infrastructure (canals and pipelines for hundreds
of miles) plus the water
has to be pumped OVER mountain ranges using large amounts of energy.
A silk particle's diameter is: - ANSWERS-0.05 mm
How much subsidence has occurred at Mendota, California after groundwater
pumping? - ANSWERS-About 30 feet (according to Dr. Poland)
How much water is stored as groundwater in California (reservoir storage is
about 40 Million AF)? - ANSWERS-850 million AF
What is the lift (in feet) and combined horsepower of the Edmonston Pumping
Plant that moves water over the Tehachapi Mountains to Southern California? -
ANSWERS-1,926 feet and 1,120,000 Horsepower
,What is one of the biggest issues with the San Francisco Delta? - ANSWERS-
Seawater intrusion into Southern California's drinking water system after levee
failure
What percent of California groundwater is used as a key source of water in a
normal water year based on lecture? - ANSWERS-30%
Why is reservoir storage needed in California? - ANSWERS-Difference between
supply and demand of the snow pack/rainfall runoff water
When were the state water projects constructed in California? - ANSWERS-
1960s
Which statement is true? - ANSWERS-California's population grew by 700% in
the last 90 years. This growth rate is unsustainable.
What has the groundwater storage change been in the southern San Joaquin
Valley in the last 60 years? - ANSWERS-Decrease in groundwater storage of
over 60 million acre-feet, which is unsustainable
How did California miners in the mid-1800s get the hydraulic mining nozzles to
work? - ANSWERS-Hydraulic pressure from upstream water source
In an agricultural operation, water that moves past the root zone moves to the
aquifer. What happens to this water? - ANSWERS-It is typically reused by other
users in a basin (ag and M&I)
, According to the Randy Record interview, what is the biggest challenge in the
future for the sustainability/reliability for MET? - ANSWERS-Climate
change/variability
Does drip irrigation save water in most ag operations? - ANSWERS-No, it most
cases it will increase water used by 10-15%. This is due to plants doing much
better with drip irrigation. This translates to higher yields but the plants are
also transpiring more.
According to the lecture, NRDC/Pacific Institute posted a chart where ag is
wasting water in California. How much water did they claim that agriculture
users are wasting with poor irrigation practices? - ANSWERS-5.6 - 6.6 mAF
How much water is used in a "normal" year by the different users? - ANSWERS-
50% environmental, 40% ag, and 10% urban
According to Kimberly Brown, what is a key characteristic that makes a
groundwater recharge/banking facility a good investment to maintain the
sustainability/reliability for the southern San Joaquin Valley? - ANSWERS--
Beneficial in a dry year since the water cost can be about 10% of the surface
water cost to pump and use
-Evaporation losses are minimal compared to surface storage options. Only
10% is lost in the accounting due to the nature of keeping track of water
molecules
-Can take advantage of wet years when the surface water is very cheap
($25/AF) and use the excess water from a wet year for recharge
What is the primary water source for the Central Coast Region, according to the
California Water Resilience Portfolio? - ANSWERS-Groundwater
