Title: Letter from Department of Natural Resources
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Permanent Link: http://ufdc.ufl.edu/UF00051475/00001
 Material Information
Title: Letter from Department of Natural Resources
Alternate Title: Letter from Department of Natural Resources on the subject of Draft Environmental Statement, C-135 and Lower Hillsborough River Basin, Four River Basins, Florida.
Physical Description: 2p.
Language: English
Publication Date: Feb. 21, 1974
 Subjects
Spatial Coverage: North America -- United States of America -- Florida
 Notes
General Note: Box 3, Folder 3C ( LEGISLATION - BOX 3, FOLDER 3 ), Item 94
Funding: Digitized by the Legal Technology Institute in the Levin College of Law at the University of Florida.
 Record Information
Bibliographic ID: UF00051475
Volume ID: VID00001
Source Institution: University of Florida
Holding Location: Levin College of Law, University of Florida
Rights Management: All rights reserved by the source institution and holding location.

Full Text





REUBIN O'D. ASKEW
Governor
State of Florida RICHARD(DICK) STONE
Secretary of State
^ ROBERT L. SHEVIN
co oAttorney General
FRED O. DICKINSON, JR.
Comptroller
DEPARTMENT OF NATURAL RESOURCES TMe O'MA
DOYECONNER
Commissioner of Agriculture
FLOYD T. CHRISTIAN
RANDOLPH HODGES LARSON BUILDING / TALLAHASSEE 32304 / TELEPHONE 224-7141 Commisioner of Ecation
Executive Director
PLEASE ADDRESS REPLY TO: Room 510

February 21, 1974


MEMORANDUM

To: H.J. Kelly
Administrative Assistant

From: RalhRClark, Engineer
Bureau of Beaches and Shores

Subject: Draft Environmental Statement, C-135 and Lower
Hillsborough River Basin, Four River Basins, Florida


The subject statement has been reviewed and an assessment of the
hydrographic effects of the channel deepening along the tidal reach
of Palm River cannot be made at this time. The plans for this Tampa
Bypass Canal (C-135) call for a canal depth of -21.0 feet, m.s.l.,
at the entrance to McKay Bay, the receiving water body. Shallow
tvI water depths less than -5.0 feet, m.l.w., prevail over McKay Bay, with
Wu -0.5 feet, m.l.w., to -1.0 feet, m.l.w., being predominant near the
existing mouth of Palm River. It is probable that this tidal reach
of C-135 between McKay Bay and water control structure S-160 will
^eyv undergo distinct stratification and might not achieve consistent tidal
'> flushing with the receiving waters of McKay Bay. This could result
in severe water quality problems within the canal itself. With this
in mind, a periodic increase in flushing due to the additional fresh-
> L water discharge might have an adverse impact on the aquatic life of
|l YMcKay Bay.

p yA hydrographic study should be made to determine the effects of this
project on the bay and estuarine system. This study should investi-
gate the hydrographic changes which would occur from altering the
freshwater discharge in western Hillsboro Bay and McKay Bay.







DIVISIONS / ADlNISTRATIVE SERVICES* ENVIRONMENTAL RESEARCH AND PROTECTION INTERIOR RESOURCES











The hydraulics associated with the proposed work should be defined,
which would include predicting:

1. The tidal hydraulic characteristics of the canal;
2. The hydraulics of the freshwater/saltwater interface;
3. The extent of saltwater intrusion;
4. The flushing rate for conditions ranging from normal
tidal exchange to flushing achieved by maximum fresh-
water runoff;
5. The pollution transport characteristics of the altered
system; and
6. The sediment transport capabilities of the system.

RRC/mf
CC: Mr. Thomas Savage




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