An Act to reauthorize the Riverton extension unit, Missouri River Basin project, to include therein the entire Riverton Federal reclamation project, and for other purposes
PL 91-409 (S.434), enacted 09/25/1970

84 STAT. ] 
PUBLIC LAW 91-409-SEPT. 25, 1970 
861 
Public Law 91-409 
AN ACT 
September 25, 1970 
To reauthorize the Riverton extension unit, Missouri River Basin project, to 
^^- '^^^^ 
include therein the entire Riverton Federal reclamation project, and for other 
purpo,ses. 
Missouri River 
Basin project. 
33 use 466 
note. 
Be it enacted hy the Senate and House of Rep'reaentatioes of the 
United States of America in Congress a^semhJed^ That the general 
plan for the Riverton extension unit, Missouri River Basin project, "R7verto"nV>J-
heretofore authorized under section 9 of the Flood Control Act of 'g^^jhorr^ition 
1944 (58 Stat. 887), is modified to include relief to water users, con- '^''^" °"^^ '""* 
struotion, betterment of works, land rehabilitation, water conservation, 
fish and wildlife conservation and development, flood control, and 
silt control on the entire Riverton Federal reclamation project. As so 
modified the general plan is reauthorized under the designation 
"Riverton unit of the Missouri River Basin project". The Riverton 
extension unit shall be operated in such manner that identifiable return 
flows of water will not cause the Wind River to be in violation of water 
quality standards promulgated pursuant to the Water Quality Act of 
1965 (79 Stat. 903). 
SEC. 2. (a) The Secretary of the Interior is authorized to negotiate ""Amendatory re-
and execute an amendatory repayment contract with the Midvale payment contract 
Irrigation District covering all lands of the Riverton unit. This con-
tract shall replace all existing repayment contracts between the Midvale 
Irrigation District and the United States. 
(b) The period for repayment of the construction and rehabilitation 
Repayment 
and betterment costs allocated to irrigation and assigned to be repaid P^"°'^-
by the irrigation water users shall be fifty years from and including 
the year in which such amendatory repayment contract is executed. 
(c) During the period required to construct and test the adequacy of 
drains and other water conservation works, the rates of charge to land 
classes and the acreage assessable in each land class in the unit shall 
continue to be as established in the amendatory repayment contract 
with the district dated June 26, 1952; thereafter such rates of charge 
and assessable acreage shall be in accordance with the amortization 
capacity and classification of unit lands as determined by the 
Secretary. 
SEC. 3. (a) Construction and rehabilitation and betterment costs of 
unproductive 
the Riverton unit which the Secretary determines to be assignable to 
lands classified now or hereafter as permanently unproductive shall be 
nonreturnable and nonreimbursable: Provided^ That whenever new 
lands or lands now or hereafter classified as nonproductive, are 
classified or reclassified as productive, the repayment obligation of the 
district shall be increased appropriately. 
(b) All miscellaneous net revenues of the Riverton unit shall accrue 
to the LTnited States and shall be applied against irrigation costs not 
assigned to be repaid by irrigation water users. 
(c) Construction and rehabilitation and betterment costs of the 
Riverton unit allocated to irrigation and not assigned to be repaid by 
irrigation water users nor returned from miscellaneous net revenues 
of the unit shall be returnable from net revenues of the Missouri River 
Basin project within fifty years from and including the year in which 
the amendatory contract authorized by this Act is executed. 
SEC. 4. The limitation of lands held in beneficial ownership within a^uTtion^!,^ 
the unit by any one owner, which are eligible to receive project water 
from, through, or by means of project works, shall be one hundred 
and sixty acres of class 1 land or the equivalent thereof in other land 
classes, as determined by the Secretary. 
862 
PUBLIC L
A
W 91-410-SEPT. 25, 1970 
[84 STAT. 
Lands, disposi-
tion. 
78 Stat. 156. 
16 u s e 4 6 0 H 2 
note. 
Interest rates. 
Availability 
of funds. 
Rules and 
regulations. 
Appropriation, 
SEC. 5. (a) Lands available for disposition on the Kiverton unit, 
including property acquired pursuant to the Act of Marcli 10, 196-1-, 
shall be sold at j)ublic or private sale at not less than appraised fair 
market value at the time of sale. The Secretary may dispose of such 
lands in tracts of any size, so long as no such dis}>osition will result in 
a total ownership within the unit by any one owner in excess of the 
limitation prescribed in section 4 above. 
(b) In the disposition of lands on the Riverton unit, resident land-
owners on the unit who have not obtained relief under the Act of 
March 10,1964, as amended, shall have a prior right to ])urchase tracts 
in order to supplement their existing farms. 
SEC. 6. (a) The provision of lands, facilitieSj and project modifica-
tions which furnish fish and wildlife benefits m connection with the 
Rivei+on extension unit shall be in accordance Avith the Federal Water 
Project Recreation Act (79 Stat. 213). 
(b) The interest rate used for purposes of computing interest during 
construction and interest on the unpaid balance of the capital cost 
alkx'ated to interest-bearing features of the project shall be determined 
by the Secretary of the Treasury as of the beginning of the fiscal year 
in which construction of said interest-bearing features is initiated, on 
the basis of the computed average interest i-ate payable by the Treasury 
upon its o\itstanding marketable public obligations, which are neither 
due nor callable for redemption for fifteen years from date of issue. 
SEC. 7. Appropriations heretofore or hereafter made for carrying 
on the functions of the Bureau of Reclamation shall be available for 
credits, expenses, charges, and cost provided by or incurred under this 
Act. The Secretary is authorized to make such rules and regulations 
as are necessary to carry out the provisions of this Act. 
SEC. 8. There is hereby authorized to be appropriated for rehabilita-
tion and betterment of the facilities of the first and second divisions 
of the Riverton unit, for completion of drainage works for said first 
and second divisions, and for fish and wildlife measures as authorized 
by this Act, the sum of $12,116,000 (based on July 1969 prices), plus 
or minus such amounts, if any, as may be justified by reason of ordi-
nary fluctuations in construction cost indexes applicable to the types 
of construction involved herein. There are also authorized to be appro-
l)riated such additional sums as may l)e required for opei'ation and 
maintenance of the Riverton unit. 
Approved September 25, 1970. 
Public Law 91-410 
September 25, 1970 
[H. J. Res.1247] 
JOINT RESOLUTION 
To amend section 19(e) of the Securities Exchange Act of 1934. 
Securities Ex-
change Act of 
1934, amendment. 
82 Stat. 453; 
83 Stat. 141. 
Whereas additional time is required for the Securities and Exchange 
Commission to complete its institutional investors study, and file 
a report with respect thereto, pursuant to section 19(e) of the 
Securities Exchange Act of 1934: Now, therefore, be it 
Resolved hy the Senate and House of Representatives 
of the United 
States of America in Congress assembled^ That section 19(e) of the 
Securities Exchange Act of 1934 (15 U.S.C. 78s(e)) is amended by 
striking out in paragraph (1) "September 1, 1970" and inserting in 
lieu thereof "December 31, 1970". 
Approved September 25, 1970.