Water Resources - IMPACT - September 2017 - 18

Figure 1: The Orange County Water District's Santa Ana River recharge ponds.

Secondly, with the invention of
the centrifugal pump shortly after the
beginning of the 20th century, we suddenly
had the ability to pump underground
water far more rapidly than Mother Nature
could replenish it, especially, but not
exclusively, in agricultural areas. Within
decades we saw significant groundwater
level declines, loss of wetlands, riparian
habitat and species, and streamflow
depletion. The land began to sink beneath
our feet, affecting drainages and damaging
infrastructure, and causing flooding in
different places. Conflict ensued, primarily
due to water scarcity.
Groundwater has always been the
poor stepsister, out-of-sight and outof-mind, until the pump runs dry.
Surface water projects have continuously
captured the lion's share of attention
and capital funds at the federal, state
and local levels. But now we appear to be
at a tipping-point, where large surface
water reservoir projects are no longer as
feasible or viable as environmental water

18 * Water Resources IMPACT

September 2017

needs are considered in the equation,
and groundwater projects are recognized
as more environmentally friendly. We
need to manage our surface water and
groundwater resources together, to
optimize the use of both. Surface water
must be used more during wetter years
and in the wet season as well as to recharge
our groundwater reservoirs. Groundwater
should be used more during dry years
and seasons when surface water is not as
available. No longer can we blithely expect
groundwater to be there when we need
it - we have to take the steps to measure it,
make it visible to the world and sustainably
manage this critically important resource.
Managed aquifer recharge comes in a
variety of packages from large scale capital
engineering projects such as off-stream
infiltration ponds and big recharge and
recovery wells, to small scale distributed
slow-it, spread-it, sink-it projects involving
elements such as rainfall rooftop capture,
swales and rain gardens, to permeable
materials replacing hardscapes and more.

The California experience
The first recognized MAR project in
California and also the first recognized
area in the United States of land subsidence
due to groundwater withdrawal is along
south San Francisco Bay, where lands
sank four feet between 1912 and 1933.
The Santa Clara Valley Water District was
formed in 1929 to construct reservoirs to
capture rainfall and begin replenishing
groundwater supplies with managed
aquifer recharge through percolation
facilities and stormflow management.
Considered one of the leading Special
Water Districts in California, the Orange
County Water District was formed in 1933
near the end of a significant drought that
began in 1928 and resulted in dropping
groundwater levels and seawater intrusion.
Today the OCWD recharges approximately
300,000 acre-feet per year with a variety
of percolation ponds (see Figure 1) and
injection wells supplied by advanced
treated recycled water, stormflows
and imported water to replenish the



Table of Contents for the Digital Edition of Water Resources - IMPACT - September 2017

President’s Message
Growing Up…with Managed Aquifer Recharge
Aquifer Storage and Recovery as Means to
The Regulatory Environment of Managed
The ASCE-EWRI Standard Guidelines
Managed Aquifer Recharge:
Managed Aquifer Recharge: A Global Perspective
What’s Up with Water? Sisyphus, Heraclitus and WOTUS
The New Economics of Water: Reducing CO2 Emissions in the Bay Delta Could Reverse Erosion
Domestic Well Aquifer Storage and Recovery Using Seasonal Springs
Philosophy and Ethics: The Rio Grande and the Ganges Rivers: How Human ‘Success’ is Choking the Life out of Two Great River-Spirits
ASR: Aquifer Storage Rescues a Small Water Supply District
Putting Aquifers to Work: MAR Applications in Nutrient Removal
Summer Conference Recap
Harvesting Glacial Meltwater with Managed Aquifer Recharge
AWRA State Section and Student Chapter News
In Memoriam: Peter E. Black
Herbert Scholarship Award Recipients for 2017-2018 Announced
August JAWRA Highlights
2017-2018 Editorial Calendar
Water Resources - IMPACT - September 2017 - intro
Water Resources - IMPACT - September 2017 - cover1
Water Resources - IMPACT - September 2017 - cover2
Water Resources - IMPACT - September 2017 - 3
Water Resources - IMPACT - September 2017 - 4
Water Resources - IMPACT - September 2017 - President’s Message
Water Resources - IMPACT - September 2017 - Growing Up…with Managed Aquifer Recharge
Water Resources - IMPACT - September 2017 - 7
Water Resources - IMPACT - September 2017 - Aquifer Storage and Recovery as Means to
Water Resources - IMPACT - September 2017 - 9
Water Resources - IMPACT - September 2017 - 10
Water Resources - IMPACT - September 2017 - The Regulatory Environment of Managed
Water Resources - IMPACT - September 2017 - 12
Water Resources - IMPACT - September 2017 - 13
Water Resources - IMPACT - September 2017 - The ASCE-EWRI Standard Guidelines
Water Resources - IMPACT - September 2017 - 15
Water Resources - IMPACT - September 2017 - 16
Water Resources - IMPACT - September 2017 - Managed Aquifer Recharge:
Water Resources - IMPACT - September 2017 - 18
Water Resources - IMPACT - September 2017 - 19
Water Resources - IMPACT - September 2017 - Managed Aquifer Recharge: A Global Perspective
Water Resources - IMPACT - September 2017 - 21
Water Resources - IMPACT - September 2017 - 22
Water Resources - IMPACT - September 2017 - 23
Water Resources - IMPACT - September 2017 - 24
Water Resources - IMPACT - September 2017 - 25
Water Resources - IMPACT - September 2017 - 26
Water Resources - IMPACT - September 2017 - 27
Water Resources - IMPACT - September 2017 - 28
Water Resources - IMPACT - September 2017 - 29
Water Resources - IMPACT - September 2017 - What’s Up with Water? Sisyphus, Heraclitus and WOTUS
Water Resources - IMPACT - September 2017 - 31
Water Resources - IMPACT - September 2017 - The New Economics of Water: Reducing CO2 Emissions in the Bay Delta Could Reverse Erosion
Water Resources - IMPACT - September 2017 - Philosophy and Ethics: The Rio Grande and the Ganges Rivers: How Human ‘Success’ is Choking the Life out of Two Great River-Spirits
Water Resources - IMPACT - September 2017 - ASR: Aquifer Storage Rescues a Small Water Supply District
Water Resources - IMPACT - September 2017 - 35
Water Resources - IMPACT - September 2017 - Summer Conference Recap
Water Resources - IMPACT - September 2017 - 37
Water Resources - IMPACT - September 2017 - AWRA State Section and Student Chapter News
Water Resources - IMPACT - September 2017 - In Memoriam: Peter E. Black
Water Resources - IMPACT - September 2017 - Herbert Scholarship Award Recipients for 2017-2018 Announced
Water Resources - IMPACT - September 2017 - 41
Water Resources - IMPACT - September 2017 - 2017-2018 Editorial Calendar
Water Resources - IMPACT - September 2017 - cover3
Water Resources - IMPACT - September 2017 - cover4
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