OWENS VALLEY, Calif. - Between the two small towns of
Big Pine and Lone Pine, the Owens River flows through a desert, its
banks sprinkled with saltcedar and rabbitbrush, its denizens
kangaroo rats and snakes.
But it wasn't always
like this. And it will change in the next decade if an appeals
court approves an agreement between the city of Los Angeles and
Inyo County.
If that happens, it will mark the
second time in three years that courts have ordered Los Angeles to
restore part of an ecosystem it all but destroyed by sending water
out of the eastern Sierra to Los Angeles. The first settlement, in
1994, renewed the Mono Basin and Mono Lake's feeder streams. Now,
after a separate legal battle that has lasted a quarter century,
Inyo County has negotiated the restoration of the lower Owens
River.
The county's plan would keep water in the
river rather than diverting it into an aqueduct. Then, after its
new 60-mile run, the water would be pumped back into the city's
aqueduct just north of Owens Dry Lake. Land near the top and the
bottom of the revived river would also be flooded to create
wetlands.
"It's unique to be
out in the middle of the desert and have 60 miles of new riparian
area to create," said Greg James, a county attorney who also
directs Inyo County's water department. "And it's unique that the
amount of water going down the river will be based on habitat, not
on water needs in Los Angeles."
If humans
played God when they killed the old river, the chance to create a
new river has them playing God again under the county's plan.
Non-native largemouth bass and the anglers who fish for them are
the big winners. Rather than trying to mimic the natural highs and
lows of the historic river, says James, the river would be
thoroughly managed for the constant flows non-native bass
need.
The old river once surged with runoff from
deep Sierra snowpacks well into late spring. By autumn, it receded
to an ephemeral creek after withering summers under a baking sun.
Occasional flooding created wetlands and shallows along the main
river and raised the level of the area's
groundwater.
The bass could never thrive in
those conditions, so county leaders and state fish and game
officials who are looking for an economic boost pushed for
continuous flows instead. The only flow-spike would be occasional
spring flows of up to 200 cubic-feet per second. That means native
pupfish and dace that used to inhabit this river won't survive;
those fish disappear as bait fish do when they share a river or
pond with the non-native bass.
Bass aren't the
only winners. State biologists expect cottonwood and willow trees
along the banks of the river to flourish, with help from artificial
spring flooding. The biologists also expect the new canopy to
promote a riparian understory to replace the desert shrubs now
throttling the old river bed. Summer resident birds of Owens
Valley, like warblers and grosbeaks, should thrive in the new
growth, though perhaps only with a parallel effort to control
parasitic brown-headed cowbirds that threaten the migrants.
In addition, a new 350-acre estuary at the
river delta at Owens Dry Lake would provide habitat for shorebirds
during critical junctures in their migration each spring and late
summer. Stopping places have diminished along the Great Basin
stretch of the Pacific Flyway, the great aerial freeway used by
millions of birds shuttling between Canada and Central and South
America. And at Blackrock, 10 dry miles below where water would be
pumped back into the aqueduct after its trip down the Lower Owens,
a system of ditches would spread water to create another 1,500
acres of wetlands there.
Still, the best-laid
plans can't guarantee how a long-dry river will respond.
"We all have real questions
about how the flows are going to work," James said. "There's no
real defined channel out there. Is 40 cubic-feet per second going
to create a big tule marsh and evaporate? Is it going to stay in
the channel and provide habitat for fish? Are we going to have to
get in and do channel work in order to make the Lower Owens
function as a river again?"
A few locals also
question whether the project is really needed for the benefit of
wildlife other than largemouth
bass.
"There's a lot of
wildlife down there already," says Scott Kemp, a local rancher who
runs cattle on a riverside plot owned by the city of Los Angeles.
"It won't get any better than it is right now because right now
there isn't much access to the river. Once you develop the project
and improve the fishing, then you bring in people and decrease the
amount of wildlife."
Alan Pickard, a biologist
with the California Department of Fish and Game, concedes there's
an element of truth in that. "But the benefits of restoration and
recovery will outweigh those impacts," he adds.
Some also question the $10 million cost to construct the pumping
station that will put water back into the aqueduct after its trip
down the Lower Owens. Leaving water in the river also means more
evaporation - at least 15,000 acre-feet a year - which means Los
Angeles will have to buy water from elsewhere to make up for the
loss. That's a $5 million to $7 million annual bill for the L.A.
Department of Water and Power ratepayers.
But
the city seems committed to the project, as does the fish and game
department.
" Jeff
Putman
Jeff Putman writes
from Mammoth Lakes, California.






