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Existing project.—This provides for the removal of snags and obstructions and occasional dredging of shoals from the mouth of the river to Galt-New Hope Bridge, a distance of 35 miles, including both forks. The mean lower low-water depths considered sufficient for needs of navigation are as follows:
Mouth of river to lower junction North and South Forks.
Landing via South Fork
At low-river stages the range between mean lower low water and mean higher high water at the mouth is 4 feet, with extreme tidal range of 5 feet; there is no tide at the upper end, just above Galt-New Hope Bridge. Ordinarily flood fluctuation is 5.5 feet at the mouth and 12 feet at the upper end. Extreme flood fluctuation is 8 feet at the mouth and 17 feet at the upper end.
The esimate of cost for new work, made in 1881, was $8,250. The latest (1930) approved estimate for annual cost of maintenance is $2,000.
The existing project was adopted by the River and Harbor Act of July 5, 1884, Senate Executive Document No. 34, Forty-seventh Congress, first session (Annual Report for 1882, p. 2637). For latest published map see House Document No. 1160, Sixty-third Congress, second session.
Terminal facilities.—The Western Pacific Railroad has warehouses at terminus, on Potato Slough; otherwise commodities are handled on small wharves or landings or on the banks at various points. The facilities are considered adequate for existing commerce.
Operations and results during fiscal year.-None.
Condition at end of fiscal year.—The existing project was completed in 1885. Controlling depths are as shown in the table under existing project, except in the first section, where 12 feet is the controlling depth; in the third section, where 2 feet is the controlling depth; and in the fourth section, where 8 feet is the controlling depth. The channel is reasonably free of obstructions to the head of navigation, except for a few that usually develop at low-water stages in the fall. The total cost and expenditures were $74,037.01, of which $8,500 was for new work and $65,537.01 for maintenance.
Proposed operations.—No operations are proposed for the fiscal year 1946.
The additional sum of $5,000 can be profitably expended during the fiscal year 1947 for maintenance, as follows: Dredging sand bars and shoals by contract, from mouth to New Hope
Landing, July or August 1946
$3,500 $8,500.00 65,537.01
labor and Government plant, September 1946
Total for maintenance
Cost and financial summary
Total cost of permanent work to June 30, 1945-
74, 037.01 74, 037.01 74, 037. 01
Amount that can be profitably expended in fiscal year ending
$5,000.00 * Exclusive of available funds.
4. SACRAMENTO RIVER, CALIF. Location. This river is formed by numerous streams draining the Trinity and Warner Mountains in northern California and empties into Suisun Bay at Collinsville. (See U. S. Geological Survey topographic map of the Sacramento Valley, Calif.)
Previous projects.—Adopted by the River and Harbor Acts of March 3, 1875, August 2, 1882, December 21, 1889, July 13, 1892, and August 18, 1894. For further details see page 1985, Annual Report for 1915, and page 1708, Annual Report for 1938.
Existing project.—This provides for a channel 10 feet deep at mean lower low water and 150 to 200 feet wide from the mouth of the river to Sacramento, 59 miles; thence 6 feet deep at low water to Colusa, 85 miles; thence 5 feet deep at low water to Chico landing, 49 miles; and such depths as practicable thence to Red Bluff, 53 miles. Below Sacramento the results are to be obtained by means of wing dams, supplemented by dredging. Above Sacramento the results are to be obtained by removal of snags and concentration of the channel by temporary works, and stream-flow regulation by the Shasta Reservoir upon its completion.
The following table shows the tidal and flood conditions prevailing:
Range in feet
Mean tidal 1
Extreme Ordinary Extreme
tidal flood flood
5. 8 ; 2.0
9.9 30.0 24.0 32. O 25.0 29.0
0 59.0 80.0 144.0 193.0 246.0
8 20 20 25 20 24
1 Mean lower low water to mean higher high water. 3 Tide at low-water season only.
The estimate of cost for new work, revised in 1935, is $588,000 exclusive of amounts expended on previous projects on the Sacramento River below Sacramento. The latest (1935) approved estimate for annual cost of maintenance is $215,000.
The existing project was authorized by the following river and harbor acts:
Mar. 3, 1899
A depth of 7 feet below Sacramento..
July 25, 1912
H. Docs. Nos. 186, 55th Cong., 2d sed,
and 48, 55th Cong., 3d sess. (AR,
1898, p. 2944, and 1899, p. 3171).
No. 35, 73d Cong., 2d sess.
For work above Sacramento
and 5 feet between Colusa and Chico Landing,
Federal Government of $12,000,000 in the cost
of Shasta Reservoir.
$12,000,000 from the Secretary of War to the
Rivers and Harbors Committee Doc
No. 35, 73d Cong., 2d sess.
Aug. 26, 1937
1 This document contains latest published map of the section above Sacramento. of the section below Sacramento, see H. Doc. No. 1123, 60th Cong., 2d sess.
Recommended modifications of project.—In House Document No. 1893, Sixty-fourth Congress, second session, it was recommended that Chico Landing, 52.4 miles downstream from Red Bluff, be made the head of the improvement.
Terminal facilities.—At Sacramento there are 4,810 linear feet of wharves, of which 1,850 linear feet are owned by the city and 420 linear feet are open to general public use. There are 245,700 square feet of warehouse space, of which 103,700 square feet are owned by the city and 21,000 square feet are open to general public use.
On the west bank, opposite Sacramento, are 4 wharves of a total length of 350 feet, with 108,560 square feet of warehouse space, all privately owned and used. Between Sacramento and Chico Landing there are 47 warehouses and numerous small landings. Freight is also handled on the bank. Between Sacramento and the mouth of the river there are, in addition to 1,440 linear feet of wharf with warehouse facilities at Rio Vista, 19 large wharves, about 38 large warehouses, and many small warehouses and landings. all owned and operated by private interests. The facilities are considered adequate for existing commerce.
Operations and results during fiscal year.-Above Sacramento: Snagging and clearing of brush were done by hired labor, from Colusa to points 20 miles upstream and 54 miles downstream, at a cost of $45,304.27. Repairs to wing dams were made between the mouth of Feather River and a point 5 miles downstream, at a cost of $11,497.17.
At and below Sacramento: A pipe-line dredge under hourly basis contract removed 330,000 cubic yards from the river between Y Street, Sacramento, and the mouth of American River, at a cost of $92,906.54. Special work on spoil areas, including rebuilding roads covered by dredge spoil, and grading, cost $1,511.06. Pipe-line dredging plant, under contract for its hire and operation, removed 21,551 cubic yards from the main channel 46 miles below Sacramento, at a cost of $4,529.66. Eight large snags were removed from the channel, at a cost of $1,018.86. Miscellaneous surveys of the river cost $4,896.70. Total cost for both sections was $161,664.26 for maintenance; total expenditures were $170,555.
Condition at end of fiscal year. The 10-foot channel below Sacramento was completed in 1931; the entire project is 33 percent complete. The work remaining to be done to complete the project is the provision of a 6-foot depth between Sacramento and Colusa and 5-foot depth thence to Chico Landing, provided a continuous river flow of 5,000 second-feet is made available by operation of the Shasta Dam and Reservoir. The controlling low-water depths were as follows: From the mouth of the river to the mouth of Cache Slough, 20 feet; thence to Sacramento, 10 feet; thence to Colusa, 4 feet; thence to Butte City, 3 feet; and thence to Sidds Landing, 3 feet. There is no regular navigation above Sidds Landing, 178 miles above the mouth, and no maintenance work has been done above this point since 1921.
The total cost under the existing project was $4,435,910.58, of which $196,616.74 was for new work and $4,239,293.84 for maintenance. Total expenditures were $4,432,657.75.
Proposed operations. The balance unexpended June 30, 1945, amounting to $254,412.27, will be expended as follows: Accounts payable
$3, 252.83 Maintenance:
Dredging at Sacramento by contract pipe-line dredge, July
to September 1945, including spoil area work and acquisi-
112, 050.00 Dredging below Sacramento by contract, August and September 1945
10,000.00 Snagging below Sacramento by hired labor and Government plant, September and October 1945.
10,000.00 Maintenance of wing-dam system at and below Sacramento
by hired labor and Government plant, September and
15, 000.00 Dredging at Brytes Bend, Mile 62.5 by contract, September 1945
20,000.00 Dredging just above Sacramento Weir, Mile 64, by contract, September and October 1945..
24,000.00 Snagging above Sacramento by hired labor and Government plant, July to December 1945
35, 000.00 Maintenance of wing-dam system above Sacramento by hired
labor and Government plant, August to October 1945.- 12, 000.00 Miscellaneous surveys, above and below Sacramento, July to October 1945
7, 659. 44 Additional snagging above and below Sacramento, and miscellaneous surveys, January to June 1946_
5, 450.00 Total for maintenance.
251, 159. 44
254, 412. 27
Total application of funds.672607-46—pt. 1, vol. 2-55
The additional sum of $605,000 can be profitably expended during the fiscal year 1947, as follows: New work (to provide the 6-foot channel from Sacramento to
Colusa, and 5-foot channel thence to Chico Landing, upon com-
$360,000 Dredging various shoals, between Colusa and Chico Landing,
by dredging plant under contract for its hire and operation,
30,000 Total, for new work_
120,000 15, 000
Dredging at Sacramento by contract, July to October 1946,
including spoil area work and land acquisition---
plant, December 1946_-
by hired labor and Government plant, July to November
plant, July to October 1946___
labor and Government plant, July to November 1946------
15,000 15, 000
Total (for maintenance)-
Cost and financial summary
Total cost of permanent work to June 30, 1945
Net total expenditures Unexpended balance June 30, 1945
Total amount appropriated to June 30, 1945
$381, 814. 93 4, 793, 013. 79 5, 174, 828. 72
3, 252. 83
5, 171, 575. 89
254, 412. 27
5, 425, 988.16
$57, 417. 27
Balance unexpended July 1, 1944
Appropriation Act approved June 26, 1944-- $173, 000.00
Appropriation Act approved Mar. 31, 1945.- 194, 550.00
Amount to be accounted for