HomeMy WebLinkAbout1980-08-05; City Council; 6328; North County Beach Erosion Study CommitteeCITY OF CARLSBAD
AGENDA BILL NO. (jp 3 3 9
DATE: August 5, 1980
DEPARTMENT MAYOR
Subject:NORTH COUNTY BEACH EROSION STUDY COMMITTEE
Statement of the Matter
At the April 15, 1980 meeting of the City Council, Mayor Packard
reported on his meeting with Mayor Bagley of Oceanside and
indicated he was in the process of organizing a group to study
beach erosion problems from a North County perspective.
The first meeting of the study group was held on May 19, 1980
and their review and report finalized on July 21, 1980. At that
time the Chairman, Dave Minnich, presented the resolutions of
recommendations.
Exhibit
Resolutions of Recommendations
Study Group Participants
-, A RESOLUTION OF THE NORTH COUNTY BEACH
EROSION STUDY COMMITTEE RECOMMENDING A
o POSITION TO BE TAKEN AFTER EVALUATING
THE ARMY CORPS OF ENGINEER'S PROPOSED
GROIN PROJECT FOR OCEANSIDE.
The North County Beach Erosion Study Committee does hereby
' resolve as follows:
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' line properties.
o0 2. That the beach sand system (littoral cell), beginning at
' Dana Point and ending at a submarine trench off of La Jolla, is
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1. That a wide, sandy beach is the best protection for shore-
not in balance and loses sand annually.
3. It appears that the major cause of San Diego North County
coastal erosion, is sand deficiency^ in the littoral cell ranging
from Dana Point to La Jolla. A regional solution would require
sand replenishment or sand conservation at a number of locations.
Expert testimony indicates that the net movement of sand is
southerly, therefore the preferred area for sand replenishment
measures would presumably be in the northerly portion of the
littoral cell. With an annual regional effort we can restore and
enjoy the beach at its present location for an indefinite period.
However, as the ocean level in this area is rising, we must assume
that over a very long term the mean high tide line will continue
to move easterly.
4. That if action to replenish the beach is not taken shortly
we can expect damage to more than the first row of structures in
many areas. In our view a sea wall solution without sand re-
plenishment will not suffice.
5. That the net movement of beach sand from North to South
precludes either a local solution or a one shot replenishment
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effort at any one location.
6. It is not clear whether any of the sand, directed into
deep water by the Marine Corps Jetty, and off-shore currents at
the Oceanside Harbor mouth, is permanently lost to downcoast
beaches, however, the large jetty protecting the Marine Corps'
Del Mar Boat Basin and the Oceanside Harbor has become a sand trap
interrupting normal sand movement and accelerating coastal erosion
downcoast. A sand bypass system and annual sand dredging would be
beneficial to southerly beaches. Oceanside's current effort to
fund a dredging operation, which will dredge 500,000 yards of
sand from the harbor area and deposit it on Oceanside's beach,
deserves vigorous support. It should be pointed out that the
500,000 cu. yd. proposal is concurred in by Dr. Inman of Scripps,
who is in some disagreement with current Army Corps of Engineers
remedies for Oceanside's beach and harbor. The Corps of Engineers
proposal to erect 14 groins, 800 to 1,000' in length, perpendicular
to the beach at Oceanside, appears to be controversial. The
Scripps group has indicated that the groins may not be effective
in protecting Oceanside and that downcoast damage may result from
groin construction. The Corps representatives state that this
is not the case. As a result of conflicting testimony, we are
unable to make a constructive determination as to whether a groin
system in Oceanside will be detrimental to the downcoast beaches.
A risk/benefit study would no doubt indicate that sand bypass and
replenishment measures, the results of which are reasonably
predictable, would be desireable as a first step prior to groin
installation. The condition of North San Diego County beaches
after the erosion of the past winter leaves little room for error.
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7. It is of the utmost importance that the coastal communities
cooperate and unanimously press for a multi-phase annual regional
sand stabilization program, rather than bog down in fraternal
bickering. (See Resolution regarding political action committee).
THEREFORE THIS COMMITTEE MAKES THE FOLLOWING RECOMMENDATIONS:
1. Should a groin system be constructed, it is imperative
that it be accompanied or preceded by an effective sand bypass systen
2. Any attempt to build groins without an effective sand
bypass should be opposed since any sand loss as a result of exist-
ing or new construction is not acceptable to communities south of
Oceanside.
3. Presuming that the groin field functions as designed,
the sand within the groin field will be relatively stable. If the
sand used to charge the groin field is removed from the sand supply
normally available to downcoast beaches, the present serious
erosion downcoast will be magnified. The sand for the groin field
should be imported from a source which does not deprive that portion
of the littoral cell lying downcoast, of needed sand replenishment.
It is recommended that a per capita contribution from all concerned
communities be made on an on-going annual basis for cost of lobby-
ing to implement the recommendations of this resolution.
22 4. j\ political lobby would proclaim that the solution
23 to coastal erosion lies primarily in Washington, Sacramento,
24 and to some degree, San Diego County and local City governments.
25 j Immediate Goal Suggestions:
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27 A. Support Oceanside in its effort to secure Federal, State
28 and County funding in order to place 500,000 cu. yds. of sand on
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their beaches this year.
B. Installation of a sand bypass system at Oceanside.
Testimony by the Scripps Institute Marine Research Group indicates
that a sand by-pass system without the proposed groin field would
be quicker, cheaper, less controversial, more cost effective,
reduce the need for harbor dredging, and if accompanied by sand
replenishment measures upcoast, be beneficial not only to Oceanside,
but to downcoast beaches as well.
C. Annual mining and placement of adequate sandy material
per year into our littoral cell over the next several years, or
until other stabilization measures are successful.
D. Funding of research grants for the purpose of investigating
the Corps' Oceanside groin field proposal and other
long term solutions, some of which are indicated below:
Possible Long Term Solutions;
1. Sand bypass measure at Oceanside and at area check dams.
2. Construction of a submarine sand dam at the La Jolla
trench and redeposit of the impounded sand into the
littoral cell during periods of northerly drift.
3. Annual slow dredging of river and lagoon areas.
4. Deepwater dredging.
5. Offshore structures.
6. Passive or active hydraulic sand mining in an area of
Camp Pendleton.
Respectfully submitted,
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A RESOLUTION OF THE NORTH COUNTY BEACH
EROSION STUDY COMMITTEE REOTMENDING
FORMATION OF A POLITICAL ACTION COMMITTEE.
WHEREAS, the North County Beach Erosion Study Committee has
concluded that the rapid and continued depletion of beach sand
and related erosion of coastal property in North San Diego County
constitutes a regional socioeconomic problem of such magnitude as
to demand immediate and extensive corrective measures; and
WHEREAS, the massive damage that has occurred, in part as a
result of government action, deprives not only all North County
residents, but also American and foreign visitors of what was one
of the finest and most popular year-round recreational attractions
on the Pacific Coast, bringing hundreds of thousands of persons to
the seashore annually; and
WHEREAS, continued beach erosion threatens destruction of
both public and privately owned property along the Coast:
NOW, THEREFORE, BE IT RESOLVED that a special, regional sea-
shore improvement committee, consisting of representatives from
both coastal and inland communities, be organized to agressively
20 seek from Congress and other appropriate agencies of government,
21 special aid and relief which would not only replenish lost sand,
22 but also prevent further deterioration of the North San Diego
23 County coastline through a continuing program for sand replenish-
24 ment.
25 PASSED, APPROVED AND ADOPTED unamiously at a meeting held
26 the 14th day of July, 1980 .
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DAVE MINNICH, Chairman
NORTH COUNTY
BEACH EROSION STUDY COMMITTEE
Mayor Ronald C. Packard Antoinette de Naie
City of Carlsbad Leucadia Town Council
Dave Minnich, Study Committee Chairman Harvey Herzberg
Carlsbad Chamber of Commerce Del Mar Planning Commission
Girard W. Anear, Councilman
City of Carlsbad
Mayor Larry Bagley
City of Oceanside
Melba Bishop, Council Member
City of Oceanside
John Casey, Council Member and
Deputy Mayor
City of Oceanside
Ralph Browne
Supv. Eckert's Office
County of San Diego
Jack Welch, Area Manager
State Dept of Beaches
Pat O'Day
Dan Daniels
Oceanside Chamber of Commerce
Bill Stone
Solana Beach Chamber of Commerce
and Town Council
Joe Cooper
Warren Putnam
Cardiff Town Council
Representative
Encinitas Chamber of Commerce