HomeMy WebLinkAboutResolution - 2503 - Grant Application - TWDB - Flood Control Plans - 01_22_1987Resolution #2503
January 22, 1987
Agenda Item #10
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BE IT RESOLVED BY THE CITY COUNCIL OF THE CITY OF LUBBOCK:
SECTION 1. THAT the City Manager is hereby authorized and directed
to execute and transmit for the City of Lubbock to the Texas Water Devel-
opment Board in Austin, Texas, an application for grant assistance from
the State of Texas Research and Planning Fund to political subdivisions
to develop reconnaissance -level plans for flood control.
SECTION 2. THAT the Mayor of the City of Lubbock is hereby autho-
rized and directed to execute for the City of Lubbock all agreements and
official documents arising out of the grant application, mentioned in
Section 1, hereof necessary and/or ancillary to effectuating the purposes
of the proposed grant.
Passed by the City Council this -22acL day of January . 1987.
B. C. M,CMINN, MAYOR
`-ATTEST-.
Ranette Boyd, City Secretary
APPROVED AS TO CONTENT:
Jamesl. Bertram, Assistant
City-M6nager for Development
Services
APPROVED AS TO FORM:
J. orth Fullingim, Ass tant
City Attorney
CITY OF LUBBOCK
LUBBOCK, TEXAS
ATTACHMENT B - _-
February 20, 1987
Mr. Charles E. Nemir, Executive Administrator
Texas Water Development Board
P.O. Box 13231 - Capitol Station
Austin, Texas: 78711-3231
re: Grant Application from the
City of Lubbock for Financial
Assistance to Develop Reconnaissance
Level Plans for Flood Protection
Dear Mr. Nemir:
In accordance with Mr. Bob Wear's instructions to Larry
Hoffman of our staff, we are pleased to submit the inclosed
addendum number one to the subject grant application. The
addendum is comprised of several statements to be added to
the original application, as well as a time schedule for com-
pletion of the proposed study. Also enclosed is a map of the
study area that can be used to produce a high quality over-
head transparency for the presentation to the board.
If you should have any questions regarding our addendum,
please call Mr. Jim Bertram, Assistant City Manager for De-
velopment Services, at (806) 762-6411, extension 2013 or
write to the City of Lubbock, P.O. Box 2000,-Lubbock, Texas
79457. We appreciate the opportunity to submit this addendum
and look forward to working with the Texas Water Development
Board.
Sincerely,
U
Larry J. Cunningham
City Manager
LJC:cm
enclosure
ADDENDUM No. 1
TO
GRANT APPLICATION TO TEXAS WATER 1
DEVELOPMENT BOARD 'S~
FOR �ad�
RESEARCH AND PLANNING FUNDS ap
FEBRUARY 17, 1987
1. Insert the following paragraphs at the end of III-C (page 5)
"Evaluation of flood protection alternatives will address non-structural
and structural alternatives.
The City of Lubbock, or its engineering consultant, will coordinate with
all applicable ongoing and completed flood studies in the region.
The flood protection plan will recognize and follow, to the extent
possible, the Corps of Engineers Preventable Damages Concept.
The study will produce results which can be applied to flood control in
the entire region."
2. Insert the enclosed time schedule for the Playa Drainage Management
Plan at the end of III-D (page G).
Submitted by
City of Lubbock, Texas
Larry J. ningham
City Manager
PLAYA DRAINAGE MANAGEMENT PLAN
TASK
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ATTACHMENT A
GRANT APPLICATION TO TEXAS WATER DEVELOPMENT BOARD
FOR
RESEARCH AND PLANNING FUNDS
SUBMITTED BY
CITY OF LUBBOCK, TEXAS
JANUARY , 1987
FEB 41987
TEXAS WATER DEVELCOP,11,,IEW BOARD
LARRY J. CUNNINGHAM
CITY MANAGER
CITY OF LUBBOCK
LUBBOCK. TEXAS
January 27, 1987
Mr. Charles E. Nemir, Executive Administrator
Texas Water Development Board
P.O. Box 13231
Capital Station, Austin, Texas 78711-3231
Dear Mr. Nemir:
Please accept this grant application submitted on behalf of
the City of Lubbock, Texas for grant assistance from the
State's Research and Planning Fund to political subdivisions
to develop reconnaissance -level plans for flood control.
If you should have any questions regarding our application,
please call Mr. Jim Bertram, Assistant City Manager for De-
velopment Services at (806) 762-6411, extension 2013 or write
to City of Lubbock, P.O. Box 2000, Lubbock Texas 79457. We
appreciate the opportunity to submit our application and look
forward to working with the Texas Water Development Board.
Sincerely,
Larry J. Cunningham
City Manager
LJC:cm
a
C.
I. GENERAL INFORMATION
:ant's Legal Name and Address:
)f Lubbock
Sox 2000
Lubbock, Texas 79457
Applicant's Director, Manager, or Official Representative:
Larry J. Cunningham
City Manager
City of Lubbock
Statute(s) Creating Applicant or Legal Authority:
Article II, Section 5,
Texas Constitution
-1-
II. FINANCIAL INFORMATION
A.
Total Project Cost:
Estimated $124,700
B.
Local Contribution:
$ 62,350 (50% of Estimated Total Cost)
C.
Requested State Assistance
Estimated $62,350
D.
Potential Sources and Amounts of Funding
for Implementation:
The City's portion of funding would be available
through
sale of 1987 General Obligation Bonds as
well as existing
bond funds from previous sales.
E.
Demonstrated Need for the Project and Funds:
Several revenue shortages due to the area
economy, coupled
with the elimination of Federal Revenue
Sharing have left
the City without the necessary funds to
apply to the comple-
tion of this project
-2-
7
III —PROJECT DESCRIPTION
A. Geographical Area For Planning:
The area to be included in the proposed flood control study
includes playa lakes located in the City of Lubbock, Lubbock
County, Texas. Attachment 1 is a copy of a Flood Insurance
Rate Map (FIRM) which identifies each of the following lakes
and lake systems.
System E-1 Playa Lakes 37, 31, 27, 26, 25,
24, 23, 19, 20 and 21
System E-2 Playa Lake 22
Others Playa Lakes 30, 29, 28, 91, 17 and 18
System E-1 begins Southwest of the City approximately one
mile west of West Loop 289 at playa Lake 37. This system
then drains east into the city through nine other playa
lakes and east out of the City into the north fork of the
Double Mountain fork of the Brazos River.
System E-2 begins with playa Lake 22 in the vicinity of 60th
Street and Elgin Avenue. This system drains into playa 23
and into System E-1.
Other lakes to be studied include playa Lakes 30, 29, 28,
and 91. These lakes drain from Slide Road and 77th Street
south to playa Lake 91 in the City's Lakeridge development
area.
Finally, the study will include playa Lake 17 at South Loop
289 and U.S. 87 and playa Lake 18 located near 50th Street
and Avenue A.
-3-
B. Description of Existing Hazard
The project is needed*to accurately and efficiently deter-
mine means to alleviate flooding of the southern portion of
the City of Lubbock's playa lake systems. The largest sys-
tem (System E-1 as portrayed by attached FIMA map) currently
poses the most significant flooding hazard.
Statement of Problem
When water from storm runoff reaches the high water
(overflow) elevation at Lake #26, several streets and high-
ways are under water and must be closed to traffic. These
streets are: Quaker Ave. west of Leroy Elmore Park, 64th
Street north of the park, Peoria Ave. east of the Park and
Loop 289 access roads south of the Park.
Loop 289 was constructed through the lake area. The main
lanes of Loop 289 were elevated with 8 - 8'x4' box culverts
to provide for the overflow. The bulk of the overflow will
pass over the access roads of the Loop and these access
roads were constructed below the overflow elevation. Twelve
24" pipes exist below the access roads.
Quaker Avenue was aligned to skirt the edge of the lake, but
parts of Quaker Avenue were constructed below the overflow
elevation.
Quaker Avenue and Loop 289 is an integral part of the City's
traffic -carrying system. Traffic must be detoured around
the lake area during high water conditions placing addi-
tional burdens on other streets and thoroughfares.
A public library was constructed in the park area and is in-
accessible during periods of high water.
The City has experienced more flooding in the past few years
due to more frequent rain fall and reduced percolation re-
sulting from a rising water table. These factors have
caused the lake to remain nearly full almost continually.
Even small amounts of rainfall cause major problems since
there is little holding capacity available in the lake.
-4-
Additional °Information
Lake 26 receives overflow from lakes upstream and overflows
Southerly to Lake 25. A study conducted by the Federal
Emergency Management Agency projects the overflow for a 100-
year frequency storm to be 470 cubic feet per second from
Lake 26. Using a developed runoff condition for the entire
drainage area, a local engineering firm projects a 100-year
overflow of840 cubic feet per second.
The primary drainage system of Lubbock is overland, surface
flow to the playa lakes. We respect the individual drainage
areas of the playa lakes but provide for overflow from one
to another when an overflow condition is projected. There
are very few storm sewers in the City and those that exist
primarily have outlets in the Yellowhouse Canyon on the
north and east sides of the city. The terrain is very flat
with a normal curb & gutter grade of approximately 0.2% but,
out of necessity, some curb and gutter has been constructed
with as little as a 0.1% grade.
The proposed engineering study would investigate ways to
prevent future flooding of this and other Lubbock playa lake
systems.
C. Brief Description of Methods and Procedures
The methods and procedures to be used in the development of
the flood protection plan are itemized in Section III-D,
which contains the proposed scope of work, work schedule and
budget. The proposed scope of work includes cost estimate
calculations for various flood control options as well as
cost -benefit analyses for these options. A review of the
cost -benefit analyses will show the economic viability of
the various flood control options.
The proposed project will be a study of only the playa lakes
in the southern portion of the City of Lubbock. The infor-
mation gained via this study, however, will be generally
applied to all systems of playa lakes in the Lubbock vicin-
ity.
-5-
D. Detailed
list of Work Tasks, Including Budget
1.
Determine Drainage Area Characteristics of Lakes:
($8,400)
a.
Delineate drainage area
b.
Identify Hydrologic soil group distribution
C.
Identify Land use distribution
d.
Calculate Soil Conservation Service Curve Num-
bers for rainfall runoff
2.
Determine Storage Volume of playa: ($45,900)
a.
Planimeter 1-foot contour of playa's with avail-
able maps
_
b.
Coordiate field survey of playa's not covered by
contour maps
C.
Identify water table elevations at each playa.
d.
Identify overflow elevations at each playa.
j
e.
Prepare Stage -Storage tables and graphs for each
J
playa
1 3.
Determine Overflow Rating Curves for playas: ($6,600)
a.
Draft profile of overflow routes
b.
Calculate cross -sectional area of overflow
routes using contour maps and/or field data
C.
Prepare Stage -Area -Discharge tables and graphs
for each playa
t
j 4.
Computer Model playa Systems: ($ 8,700)
a.
Use Flood Hazard Study rainfall depths and dura-
tions
b.
Generate hydrographs for playas
C.
Route hydrographs from playa to playa along
'
overflow routes
d.
Prepare high water level elevations at each
playa and compare to Flood Hazard Study's re-
sults.
M
5.
Develo `Alternative Management Plans: $3 900
P 9 ( � )
a.
Gravity outfall lines to other plays, existing
outfalls or Yell'owhouse Canyon
b.
Lift Stations and force mains to other playas,
existing outfalls or Yellowhouse Canyon
C.
Open drainage ditches to other playas
d.
Artificial recharge of groundwater
e.
Combination of above alternatives
6.
Evaluate
Water Quality for Municipal Supply and/or
'
Irrigation: ($17,000)
a.
Submit lake and underground water samples to
laboratory for analysis for water quality
b.
Determine treatment needs (if any) for water use
C.
Discuss collection, storage and distribution for
municipal use if appropriate.
1 7.
Evaluate Alternatives: ($2,700)
a.
Use computer model previously developed
b.
Modify date to reflect alternatives being
1
studied
C.
Prepare high water level elevations at each
playa for comparison and evaluation
8.
Evaluate Controls and Automation: ($4,300)
a.
Evaluate recording devices and possible loca-
tions
b.
Evaluate control devices and possible locations
_
C.
Evaluate control system equipment cost and reli-
ability
9.
Cost
Estimates for each Alternative ($3,900)
a.
Calculate annualized capital and maintenance
cost for each alternative
b.
Calculate annualized flooding damage cost for
each frequency of runoff event.
-7-
10. Perform Risk Analysis for the Alternatives ($4,500)
a. Evaluate the cost vs. benefit for various alter-
natives and frequencies to determine the least
cost alternative
11. Phasing of Selected Alternatives: ($5,600)
a. Determine priorities of improvements
b. Develop schedule and budget for construction im-
provements
12. Review Recommendations: ($3,600)
a. Select level of protection to public and private
property
b. Select alternative(s) to be considered
13. Prepare Engineering Report on playa Lake Management
for City Council ($9,600)
a. Prepare draft report
b. Prepare final report
It is proposed that the project, if funded, would be
conducted by an engineering consultant with qualified
technical staff capable of completing the project
within the financial and time constraints. The City
proposes not to initiate the consultant selection pro-
cess until after necessary funding is acquired.
Qualifications
The City of Lubbock, Transportation Director, Larry V.
Hoffman. P.E., will be assigned the task of administering
the project on behalf of the City of Lubbock. Mr. Hoffman
also serves as the City Engineer and is a registered Profes-
sional Engineer in the State of Texas. Additional informa-
tion regarding Mr. Hoffman's background and qualifications
will be provided if desired.
In
E. Specific Application'of the Planning Project to Meeting
Identified Service Needs
The successful completion of the proposed project will re-
sult in identification of specific flood control options ap-
plicable to the playa lakes included in Section III(a) of
this application. The accompanying cost - benefit analysis
will enable the City of Lubbock to select an option or com-
bination of options the implementation of which will meet
the flood control needs that have been identified. Further-
more, the general information gained during the conduct of
the proposed project will be applicable to the flood control
needs of other playa lake systems in the City of Lubbock,
Lubbock County, and other regions of the state.
IV. Notification/Assurances
Notification/Assurance
See attachment 2 and 3 for copies of certified letters to
all political subdivisions in the planning area and letter
of assurance.
10
CITY OF LUBBOCK
LUBBOCK, TEXAS
LARRY J. CUNNINGHAM
CITY MANAGER
Dr. E.C. Leslie, Superintendent
January 27, 1987
Lubbock Independent School District
1628 19th Street C`f
Lubbock, Texas 79401
Dear Dr. Leslie:
The City of Lubbock is applying for grant assistance from the
State's Research and Planning Fund to political subdivisions
to develop reconnaissance level plans for flood control.
The grant application is requesting approximately $62,350 in
state assistance to provide funding for an engineer ni g study
which will propose recommendations to alleviate playa lake
flooding along the chain of playa lakes in south Lubbock.
The application requires that all political subdivisions in
the planning area be notified of the planning proposal.
Should you have any questions or comments regarding the grant
application, please feel free to call.
Sincerely,
Larry J. Cunningham
City Manager
LJC:cm
LARRY J. CUNNINGHAM
CITY MANAGER
CITY OF LUBBOCK
LUBBOCK. TEXAS
January 27, 1987
The Honorable Rod Shaw
County Courthouse
201 Lubbock County Courthouse
Room 101
Lubbock, Texas 79401
Dear Judge Shaw:
The City of Lubbock is applying for grant assistance from the
State's Research and Planning Fund to political subdivisions
to develop reconnaissance level plans for flood control.
The grant application is requesting approximately $62,350 in
state assistance to provide funding for an engineering study
which will propose recommendations to alleviate playa lake
flooding along the chain of playa lakes in south Lubbock.
The application requires that all political subdivisions in
the planning area be notified of the planning proposal.
Should you have any questions or comments regarding the grant
application, please feel free to call.
Sincerely,
Larry J. Cunningham
City Manager
LJC:cm
LARRY J. CUNNINGHAM
CITY MANAGER
CITY OF LUBBOCK
LUBBOCK, TEXAS
January 27, 1987
Mr. Charles Nemir, Executive Director
Texas Water Development Board
P.O. Box 13231
Capitol Station, Austin, Texas 78711-3231
Dear Mr. Nemir:
In accordance with Section 355.104 and 355.106 of the Texas
Water Code, I hereby provide assurance that the enclosed City
of Lubbock grant application for assistance from the State's
Research and Planning Fund to political subdivisions to de-
velop reconnaissance -level plans for flood control meet the
following criteria.
(1) Planning does not duplicate existing projects
(2) Implementation of viable solutions identified
through the planning will be diligently pursued
(3) Local sources of funding required for implementa-
tion will be diligently pursued.
If you have any questions regarding this or any other part of
the enclosed grant, please do not hesitate to call.
Sincerely, ,