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Updated February 15, 2017
Harbor Deepening: Federal Studies and Construction Projects
Deep-draft coastal harbors handle a large volume of U.S. 
Authorized Projects and Studies 
imports and exports. The U.S. Army Corps of Engineers 
The Corps maintains multiple harbors with depths greater 
(Corps) is responsible for improving and maintaining 
than 50 ft in some commercial channels: Seattle, Oakland, 
federal navigation channels. An issue for Congress is that 
Los Angeles, and Long Beach on the West Coast, and some 
demand for the Corps to deepen harbors outpaces what the 
channels of the New York and New Jersey Harbor, 
agency delivers at recent funding levels.  
Baltimore, Norfolk, and Miami on the East Coast. Other 
harbors are being studied for deepening 
(Table 1) or have 
Demand for Deeper Harbors 
been authorized for deepening 
(Table 2). Federal funding is 
The potential for more goods to be transported by larger 
being used in early FY2017 for the deepening of the 
vessels has led many ports and communities on the East 
Delaware River Main Channel to 45 ft and of Savannah 
Coast and the Gulf of Mexico to pursue Corps harbor-
Harbor to 47 ft. Congress authorized eight other projects for 
deepening projects. Several ports on the U.S. West Coast 
depths of 45 ft or more in 2014 and in late 2016
. Table 2 
already have depths of more than 50 feet (ft). Some West 
shows that the majority of these projects have yet to receive 
Coast harbors are naturally deep; they typically require less 
federal construction funds.  
effort to create and maintain their channels than other 
harbors. Following the opening of the expanded Panama 
Table 1. Studies for Deepening to 45 Feet or More 
Canal in 2016, larger vessels with deeper drafts (i.e., up to 
Studied Change in 
50 ft) are able to transit the canal under normal operating 
Authorized Studies  
Depth (feet)
 
conditions. The expanded canal provides a route for deeper-
Houston-Galveston System, TX 
40 to 45 
draft vessels to move between Asia and U.S. harbors on the 
East Coast and Gulf of Mexico. Questions remain regarding 
Manatee Harbor,  FL 
40 to 45 
how U.S. trade responds to larger vessels, the Panama 
Mobile Harbor, AL 
45 to 55 
Canal expansion, congestion at West Coast harbors, and the 
Port of Beaumont, TX 
40 to 48 
dynamics of markets for shipped goods. Changes in 
Mississippi R. Ship Channel, LA 
45 to 50 
shipping patterns and volumes remain difficult to predict. 
For example, some ports handle specific types of 
Norfolk Harbor, VA  
50 to 55 
commercial traffic (e.g., petroleum tankers). Also, shipping 
San Juan Harbor, PR 
35 to 50 
patterns are shaped by the competitiveness of alternative 
Seattle Harbor, WA 
51 to 55 
transportation means, such as transport by transcontinental 
Source: CRS using Corps project data. Portions of the Houston-
railroad. These and other factors make it difficult to 
Galveston System are already at 45 feet. 
anticipate where and when the nation would most benefit 
from deepening specific harbors. 
Table 2. Authorized Corps Construction Projects for Harbor Deepening to 45 Feet or More 
FY2016 
FY2017  
Existing to 
Year of 
Construction 
Project Name  
Work Plan 
Request 
Improved 
Author-
Cost 
Benefit-
& Location 
(millions) 
(millions) 
Depth (feet)
 
ization 
(millions)
 
Cost Ratio 
Delaware River Main Channel,  
$22 
$3 
40 to 45 
2000 
$389 
1.3 
NJ, PA, and DE 
Savannah Harbor, GA 
$45 
$42 
42 to 47 
2014 
$703 
5.5 
Freeport Harbor, TX 
— 
— 
46 to 56 
2014 
$239 
1.9 
Corpus Christi Ship Channel, TX  
— 
— 
45 to 54 
2014 
$353 
2.6 
Boston Harbor, MA 
— 
— 
40 to 51 
2014 
$311 
7.2 
Sabine Neches Waterway, TX 
— 
— 
40 to 48 
2014 
$1,114 
1.3 
Jacksonville Harbor, FL 
— 
— 
40 to 47 
2014 
$601 
2.7 
Brazos Island Harbor, TX 
— 
— 
44 to 52 
2016 
$210 
1.5 
Charleston Harbor 
— 
— 
45 to 52 
2016 
$503 
3.9 
Port Everglades 
— 
— 
42 to 48 
2016 
$337 
2.9 
Sources: CRS using P.L. 114-322, P.L. 113-121, Corps FY2016 Work Plan, Corps FY2017 Budget Request, and Corps project documents. 
Notes: Benefit-cost ratio (BCR) shown was the ratio used for purposes of congressional construction authorization. For more on use of BCRs 
in Corps planning and budgeting, see CRS Report R44594, 
Discount Rates in the Economic Evaluation of U.S. Army Corps of Engineers Projects.
https://crsreports.congress.gov 
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Harbor Deepening: Federal Studies and Construction Projects 
Federal Funding 
In 2014, Congress in the Water Resources Reform and 
From FY2011 to FY2016, federal spending on all coastal 
Development Act (WRRDA 2014, P.L. 113-121) expanded 
navigation construction (including deepening) annually 
opportunities for nonfederal construction and financing of 
averaged $146 million. In FY2015 and FY2016, federal 
navigation improvements. If the cost of the nonfederal work 
funding for operation and maintenance (O&M) increased 
or the nonfederal funding exceeds the required nonfederal 
relative to earlier fiscal years 
(Figure 1). Recently, both 
cost share, the Corps is authorized to credit the excess or to 
federal harbor construction and O&M funding have 
reimburse the nonfederal sponsor subject to the availability 
followed a trend of being more concentrated on a few 
of appropriations. WRRDA 2014 did not change the federal 
activities, rather than smaller amounts distributed broadly. 
financial commitment to construct; instead, it altered how 
that commitment may be met. Some nonfederal sponsors of 
Figure 1. Appropriations for Corps Coastal Navigation 
deepening projects have used these authorities to expedite 
Construction and Operations & Maintenance (O&M) 
work on their projects. No publicly available documents 
track nonfederal spending on navigation projects eligible 
for federal reimbursement. 
Congressional Considerations 
Policymakers are faced with a fiscal context that makes for 
an uncertain path forward for a number of deepening 
projects. Categories of policy options include the following: 
  
Status Quo. Maintain the status quo on authorizing 
studies, construction, cost shares, reimbursements, and 
federal appropriations.  
    
Federal Funding Plan. Develop a federal spending 
Source: CRS using data provided from Corps. 
framework for the suite of deepening projects. The 
framework may reduce uncertainty over how federal 
Construction costs for harbor projects are split between the 
construction appropriations are likely to be used. 
federal government and nonfederal project sponsors. The 
split depends on the depth of the harbor improvement 
  
Increase Project Delivery. Options include increasing 
recommended by the Corps
 (Table 3). Federal funds for 
the federal funding available, decreasing the federal cost 
construction come from the General Fund of the U.S. 
share, and increasing the level of private investment 
Treasury, whereas O&M is wholly or partially funded from 
through public-private partnerships and alternative 
the Harbor Maintenance Trust Fund (HMTF
; Table 3). The 
financing.  
HMTF is funded from tax revenues from waterborne cargo 
imports and cruise ship passengers at federally maintained 
Projects deepening beyond 45 ft involve many of the 
ports. Congress appropriates the funds for both construction 
nation’s largest ports. In contrast, ongoing discussions 
and O&M, typically as discretionary spending through 
about the future of the HMTF are not only about larger 
annual Energy and Water Development appropriations acts.  
ports but also about maintenance of smaller, shallower, and 
Table 3. Construction and O&M Cost Shares for 
more remote harbors, which often are used for fishing and 
Coastal Navigation Improvements 
other local industry, commuting or other access, and 
recreation. Another issue that may influence the level of 
Max. Federal  
support or opposition for specific harbor-deepening projects 
Improvement Depth 
Cost Share 
is their impact on sensitive coastal ecosystems and the 
 
(in feet)
 
 (source of funds)
 
challenges of mitigating those impacts. 
Const. 
20-50 
65% (GF) 
Nicole T. Carter, Specialist in Natural Resources Policy   
Const. 
Deeper than 50 
40% (GF) 
IF10455
O&M 
Less than 50 
100% (HMTF) 
O&M 
Deeper than 50 
50% (HMTF) 
Source: CRS using 33 U.S.C. §2211 and P.L. 114-322. 
Notes: P.L. 114-322 increased the federal construction costs 
between 45 ft and 50 ft from 40% to 65% inclusive of contracts 
awarded after June 10, 2014. GF = General Fund of the U.S. 
Treasury; HMTF = Harbor Maintenance Trust Fund.  
 
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Harbor Deepening: Federal Studies and Construction Projects 
 
 
 
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