Report to THE INTERNATIONAL JOINT COMMISSION
on
THE DIVISION OF THE WATERS OF THE ST. MARY AND MILK RIVERS 1984 by
D.A. Davis representing Canada
and
Philip Cohen representing the United States } Report to y THE INTERNATIONAL JOINT COMMISSION on } THE DIVISION OF THE WATERS OF THE ST. MARY AND MILK RIVERS
1984
1 by D. A. Davis
1 representing Canada
and
Philip Cohen J representing the United States 1 ) t J t March 1985
International Joint Commis.sion l Ottawa, Ontario qnd Washington, D.C.
Gentlemen:
In compliance with the provisions of Article VI of the Boundary Waters Treaty of 1909 and Clause VIII (c) of your order of October 4, 1921, directing the division of the waters of St. Mary and Milk Rivers between the United States and Canada, we are transmitting herewith a report on the operations during the irrigation season ended October 31, 1984.
Respectfully submitted, l ~.Q.~ D. A. Davis Accredited Officer of Her Majesty
Accredited Officer of the United States
1'
}
J SYNOPSIS
During the 1984 irrigation season the natural flow of the St. Hary and Milk
Rivers was 74 percent and 19 percent, respectively, of the long-term average.
The natural flow of the St. Mary River at the International Boundary during
the irrigation s~ason, April 1 to October 31, 1984, was 534 000 cubic decametres
(dam3) (433,000 acre-feet). · Under the terms of the Treaty, the Canadian
share was 338 000 dam3 (274,000 acre-feet). The total flow recorded at the
International Boundary during the irrigation season was 99 percent of the
Canadian allotment. The remainder of this allotment was delivered by way of
the St, Mary Canal to Canadian water users along the Milk River.
The computed natural flow of the Milk River at the Eastern Crossing of the
International Boundary from March 1 to October 31, 1984, was 26 500 dam3
(21,500 acre-feet) with no adjustments applied for upstream use by Canada and the
United States. This flow is the lowest computed natural flow since computa
tions began in 1912. Under the terms of the Treaty, the United States' allot I ment was 17 500 dam3 (14,200 acre-feet). An accurate determination of natural flow and apportionment of the flow of the Milk River historically has not
been made, as it was assumed that United States and Canadian uses generally
are less than their respective shares. However, increasing use in both countries
has resulted in a joint study to derive methods for more accurately determining
natural flow at the Eastern Crossing of the International Boundary. The report
now being prepared will include a more comprehensive natural-flow computation
apd water-division procedure.
I i The Accredited Officers authorized adjustments to the normal operating proce dures to the mutual benefit of both countries. Refund of the April deficit delivery to Canada on the St. Mary River was delayed until after the snowmelt runoff had peaked to allow a complete first irrigation on the lower Milk River in the United States. In exchange, the United States again transferred a portion of the Canadian share of the St. Mary River to the Milk River using the United States St. Mary Canal. This transfer was used to offset Canadian withdrawals along the Milk River at times of zero or low natural flows.
The natural flow of the three eastern tributaries of the Milk River that are apportioned, Lodge Creek, Battle Creek, and Frenchman River, was 2.7 percent,
17 percent, and 14 percent, respectively, of t;he long-term averages. The combined natural flqw of these tributaries was 18 400 dam3 (14,900 acre-feet), of which the United States received 9 060 dam3 (7, 340 acre-feet). Both of these totals were the lowest since natural-flow computations began.
ii TABLE OF CONTENTS
PAGE
SYNOPSIS i
TABLE OF CONTENTS iii
INTRODUCTION 1
ST. MARY RIVER 2
MILK RIVER 8
EASTERN TRIBUTARIES OF THE MILK RIVER 9
LODGE CREEK 12
BATTLE CREEK 15
FRENCHMAN RIVER 19
TABLES
1 Summary of Division of St. Mary River 6-7 and Diversion to Milk River
2 Summary of Lodge Creek Division 13-14
3 Summary of Battle Creek Division 17-18
4 Summary of Frenchman Ri ver Divi s i on 20-21
ANNEX
A Treaty between the United States and Great Britain Relating to Boundary Waters; and Questions Arising between the United States and Canada - Article VI 22 Inter national Joint Commission - 1921 Order
B I nternational System of Units 27 (SI) Conversions
c List of Gauging Stations 29
MAP
Map of St. Mary and Milk River Drainage Basins 34 f iii t INTRODUCTION
Article VI of the Boundary Waters Treaty of 1909 between Great Britain and the
United States governs the apportionment of the waters of the St. Mary and Milk
Rivers. The terms of the Treaty were further clarified by the i921 Order of the International Joint Commission. Copies of Article VI and the 1921 Order are contained in Annex A of this report. To comply with this Treaty, Field
Representatives of the United States and Canada collected and compiled hydro metric data at 39 international gauging stations on a cooperative basis. An additional 36 gauging stations were operated independently by Canada or the
United States to obtain data on diversions, reservoir contents, return flows, and index runoff. Most of this additional information is used to improve the accuracy of natural-flow computations.
This report summarizes the natural-flow computations of 1984, mentions appor tionment of the natural flow, and explains unusual occurrences during the year as well as procedural modifications designed to increase the accuracy of the natural-flow computations. Summary natural-flow tables are included. Detailed natural-flow computations are included in Appendix A; daily discharge and other related data are included in Appendix B. Appendices A and B are submitted with this report under separate cover.
In accordance with the SI conversion schedule established by the International
Joint Commission, this report uses SI units first, followed by inch-pound units in parentheses. Data in tables are shown in SI units first, followed by the respective inch-pound units; for example Tables 1 and lA.
The format for Appendices A and B of the report is SI units only. All Canadian data are published in SI units. United States data computed in inch-pound
1 t units were converted to SI units using the appropriate conversions. A summary
of the conversion factors is contained in Annex B.
Mr. D. A. Davis, Regional Director, Western and Northern Region, Inland Waters
Directorate, as Accredited Officer of Her Majesty, was represented in the field
by Mr. G. H. Morton, Regional Chief, Water Resources Branch, Calgary, Alberta,
and Mr. J. G. Way, Acting Regional Chief, Water Resources Branch, Regina,
Saskatchewan. Mr. Philip Cohen, Chief Hydrologist, United States Geological
Survey, as Accredited Officer of the United States, was represented in the
field by Mr. G. M. Pike, District Chief, United States Geological Survey, Helena,
Montana. Because of the January 1, 1985 departures of Messrs. Way and Pike,
computations were approved and signed by Mr. B. N. Johnson and Mr. D. B. Hanson,
respectively, as Acting Field Representatives. This report was prepared jointly
by personnel of the Water Resources Branch of Canada and the United States 1 Geological Survey under the supervision of Messrs. Morton, Johnson, and Hanson.
The annual conference of Field Representatives was held in Helena, Montana, on
January 30, 1985. Streamflow records collected jointly by the United States and
Canada were reviewed and approved. Mutual problems and changes in computational
procedures were discussed and a schedule of field operations for 1985 adopted.
ST. MARY RIVER
During the irrigation season, April 1 to October 31, Canada's share of the nat
ural flow of the St. Mary River at the International Boundary, as stipulated by
the 1921 Order, is three-fourths of the natural flow when that flow is 666
cubic feet per second (18.86 cubic metres per second) or less. Flows in excess
of that quantity are divided equally between Canada and the United States.
During the non-irrigation season, November 1 to March 31, the flow is divided
equally between the two countries.
2 [ To comply with the above order, representatives of both countries make twice
monthly computations of the daily natural flow of the St. Mary River during the
irrigation season. If use by the United States is in excess of its share,
then at the earliest opportunity, a delivery of an equivalent quantity of water
is made to Canada. Regular interim reports of these computations are sent to
all agencies involved in the water use and management of the flow of the St. Mary
River. The interim reports keep these agencies informed as to the quantity of
water available.
Tentative computations and interim reports are not made during the non-irriga
tion season when use by the United States is limited to storage in Lake Sher
burne. The flow into Lake Sherburne is considerably less than 50 percent of
the natural flow. Occasionally, water is diverted into the St. Mary Canal dur
ing the non-irrigation season, necessitating additional tentative computations.
Lake Sherburne, the only storage reservoir within the St. Mary River basin in
the United States, is used to store part of the United States' share of flows
for later diversion to the Milk River. This water, which passes through Canada,
is used by the United Stat es for irrigation in the eastern Milk River valley.
Storage in Lake Sherburne was 20 000 dam3 (16,200 acre-feet) on October 31,
1983, and had decreased to 16 300 dam3 (13,200 acre-feet) just prior to the
irrigation season on March 31 , 1984. Maximum storage was 55 700 dam3 (45,200
acre-feet) on July 8 and storage decreased to 37 700 dam3 (30,600 acre-feet)
by the end of the irrigation season on October 31, 1984.
Water was diverted from the St. Mary River into the St. Mary Canal leading to
the Milk River from February 29 to August 28, 1984. The total flow recorded at
the gauging station on the St. Mary Canal at St. Mary Crossing (station 05AE029)
was 202 000 dam3 (164,000 acre-feet). Any seepage from the canal between the
3 f point of diversion and the crossing of the St. Mary River is assumed to return
to the river and eventually become available to Canada.
Construction on the Lake Sherburne outlet structure continued this year as part
of a dam safety upgrading program by the U.S. Bureau of Reclamation. However,
operation of the dam for irrigation purposes was normal.
The total natural flow of the St. Mary River at the International Boundary from
November 1, 1983, to October 31, 1984, was 617 000 dam3 (500,000 acre-feet), of
which 534 000 dam3 (433,000 acre-feet) occurred during the irrigation season,
April 1 to October 31, 1984. For the irrigation season, Canada's and the
United States' shares were 338 000 dam3 (274,000 acre-feet) and 196 000 dam3
(159,000 acre-feet), respectively. A total discharge of 336 000 dam3 (272,000
acre-feet) was recorded at the International Boundary, which was 99 percent
of the Canadian share. The computed natural flow during the irrigation
season was 74 percent of the average of the previous 82 years of record.
Deficit deliveries were recorded in 8 of the 14 division periods during the
1984 irrigation season. The large deficit which accumulated in April resulted
in a request by the United States for a delay in refunding this deficit until
after the mountain snowpack runoff peaked. This delay would allow the irriga
tors on the lower Milk River in the United States to obtain a complete first
irrigation. Canada granted this request provided that it be notified prior to
the refund and that it have the option of taking all or part of the delivery
from the Milk River rather than the St. Mary River. Canada chose to take
4 500 dam3 (3,650 acre-feet) of the refund from the Milk River during July and
August to permit the Canadian users to continue irrigating during late summer.
During this period, the Canadian share of the Milk River natural flow often was
less than the demand by water users along the Milk River in Canada. This r 4 f I volume of water offset the apparent shortages on the St. Mary River in July, t August, and the entire 1984 irrigation season. The mutual cooperation of both countries during this water-short year allowed irrigators on both sides of the t International Boundary to make the best use of available water supplies and avoid significant financial losses. Cold, wet weather at the end of October
was largely responsible for the season-ending deficit.
The division of the St. Mary River natural flow is summarized in Tables 1 and
1A, which follow. The detailed computation of the natural flow is given in Table
5 and the historical summary in Table 6 of Appendix A.
J t
5
f J TABLE 1 1 SUMMARY OF DIVISION OF ST. MARY RIVER AND DIVERSION TO MII...K RIVER 1984
QUANTITIES IN CUBIC DE CA METRES
Sl MARY RIVER EXCESS CHANGE IN TOTAL Sf MARY MILK AT REC'D STORAGE- AVAIL ABLE CANAL RIVER MONT H INTERNAT IONAL BOUNDARY BY LAKE FOR AT AT RECORDED -=NATURAL' -u-:-~- --CANAoli:s CANADA SHERBURNE DIVE RSION St. MARY EASTERN FLOW FLOW SHARE SHARE CROSS ING CROSSING APR. 21 092 31 991 8 923 23 068 - 1 976 - 4 723 13 646 15 622 22 478 MAY 60 913 96 170 36 267 59 903 1 010 8 463 27 SOL: 26 794 21 522 --- JUN . 49 233 104 074 132 022 73 791 103 231 343 28 715 50 076 ----43 --736- JUL . 65 064 109 164 41 956 67 208 -2 144 - 7 559 49 515 51 659 43 070 AUG. 35 091 48 027 13 143 34 384 20 7 -21 571 34 714 34 507 40 368
SEP ') 181 0 <- 976 26 226 34 746 8 70 1 26 045 181 8 520 ------OCT 23 792 32 099 8 026 24 073 - 28 1 8 307 - 281 0 945 TOTAL IRRIG ATION SEASON 336 252 534 219 195 307 338 412 -2 160 20 152 175 5.'35 177 815 175 095 J
QUANTITI ES FOR ST. MARY RIVER DIV ISION PER IODS, IN CUBIC DECAMETRES
DIVI SION PERIOD RECEIVED RE CE IVED BY CANADA AT NATURAL CANADA'S BY ------l INTERNATIONAL BOUNDARY FLOW SHARE CANADA ABOVE SHARE BELOW SHARE APR. I TO AP R. 15 6 975 5 230 3 442 1 738 APR 16 TO APR. 30 25 016 17 833 17 650 188 MAY I TO MAY 15 22 018 16 309 16 1.;.8 5 176 MAY 16 TO MAY 31 74 152 43 59Lf 44 428 834 JU N. I TO JUN 15 7'?, 4 'i ? 4'i 1~ 7 45 108 29 JUN. 16 TO JUN. 30 103 570 57 394 58 766 872 JUL . I TO JUL . 15 68 182 40 200 37 889 2 311 JUL . 16 TO JUL . 31 40 982 '27 008 27 175 167 AUG. I TO AUG. 15 28 58 7 20 304 18 983 1 321 AU G. 16 TO AUG. 31 19 440 14 580 16 108 1 528 J SEP I TO SEP 15 14 877 11 157 10 107 1 050 SEP. 16 TO SEP 30 19 869 14 88 3 16 119 1 231 OC T. I TO OCT 15 17 5Lf2 13 156 13 119 37 OCT 16 TO OC T 31 14 557 10 917 10 673 244
1This i s a s ummary of data _from Tabl2 5, App:::mdix A.
6 TABLE 1A 1 l SUMMARY OF DIVISION OF ST. MARY RIVER AND DIVERSION TO MILK RIVER 1984
QUANTITIES IN ACRE-FEET
St. MARY RI VER EXCESS C HAN G[ IN TOTAL St MARY MI LK AT REC'D S fORAGE- AVAILABLE CA NAL RIVER MONTH IN TERNATIONAL BOUNDARY BY LAKE FOR AT AT RECORDED -=NATURAL r- -u-:-5.- --CANADA's CANADA SHERBURNE DIVER SION St. MARY EA STERN FLOW FLOW SHARE SHARE CROSS ING CROSS IN G APR . l7' 099 25 ,935 7, 234 18,701 -1,602 - 3,329 11' 063 12,665 18,223 f MAY 49,382 77' 965 29,402 48,563 819 6,861 22,541 21,722 17,448 · f------JUN . 63,876 23,279 40,597 39,913 35 , 457 84,373 147,565 83,690 683 ---·-- JUL . 52,747 88,499 34,014 54,486 -1 ,738 - 6 ,128 40,142 41,880 34,917 J _;_ AUG. 28,448 38,936 10,655 28,281 168 -17,438 28,143 27 ,_97 5 32,726 SEP 21,261 _28' 169 7,054 21' 115 147 6,907 147 0 '---·------c----1!4 ~l. OCT 19, 283 26,023 6,507 19,516 - 228 6' 734 - 228 0 ?~ TOTA L IRRIGATION 222,600 158, 7Lfl 274,351 142 , 404 144,155 141 , 950 SEASON 433,092 -1,751 16 , 337 f z_7_ / 1 QUANTITIES FOR ST. MARY RIVER DIVISION PER IODS, IN A CRE- FEET
DIVI SION PERIOD RECEIVED RECEIVED BY CANADA AT NATURAL CANADA'S BY 1------INTERNATIONAL BOUNDARY FLOW SHARE CANADA ABOVE SHARE BELOW SHARE APR I TO APR. IS 5 655 4 240 2,790 1,450 I APR 16 TO APR. 30 20 23 1 14 461 14 309 152 MAY I TO MAY 15 17 850 13,222 13,364 143 J MAY 16 TO MAY 31 60 115 35 342 36,018 676 JU N. I TO JUN IS 63 601 36 755 36 731 24 JUN. 16 TO JUN. 30 33 964 46 935 47 642 707 JU L. I TO JUL . IS 55 275 32 590 30 717 1 874 JUL . 16 TO JUL . 31 33 224 21 895 22 031 135 AUG. I TO AUG. IS 23,176 16,460 15,390 1,071 - - AUG. 16 TO AUG. 31 15,760 11 '820 13,059 1 , 239
SEP I TO SEP IS 12 ,061 9,045 8,194 851 SEP 16 TO SEP 30 16,103 12,070 13,063 998 OCT. I TO OCT IS 14,221 10,666 10,636 30
OCT 16 TO OCT 31 11 '801 8,850 8,653 198
1All values are conversions of data from Table 1. Totals may not a dd or s ubtrac t exactly as a result of rounding.
I 7 1 MILK RIVER
During the irrigation season, April 1 to October 31, the United States' share of
the natural flow of the Milk River at the Eastern Crossing of the International
Boundary, as stipulated by the 1921 Order, is three-fourths of the natural
flow when that flow is 666 cubic feet per second (18.86 cubic metres per second)
or less. Flows in excess of that quantity are divided equally between the t United States and Canada. During the non-irrigation season, November 1 to J March 31, the flow is divided equally between the two countries.
To comply with the above order, representatives of both countries make monthly
computations of the natural flow of the Milk River during the irrigat i on f season. This computation includes adjustment for the water diverted from the St. Mary River basin and evapotranspiration losses but does not include a I computation of water used or stored by Canada or the United States within the Milk River basin itself. Historically, Canada's and the United States' uses
! have been assumed to be less than their respective shares and no formal appor
tionment has been made. However, several consecutive dry years and the
increasing use of sprinkler-irrigation systems have resulted in increased use 1 by Canadian and United States irrigators. To evaluate the significance of the increased use, a natural-flow study is being conducted by Canada and the
United States. A more comprehensive natural-flow computation and water-division I procedure will be proposed as part of the final report now being prepared.
The natural flow of the Milk River at Eastern Crossing of the International f Boundary from March 1 to October 31, 1984, was 26 500 dam3 (21,500 acre- feet) .
This flow is 19 percent of the average natural flow of the previous 72 years of
record and is the lowest on record. The respective shares of the United States
and Canada were 17 500 dam3 (14,200 acre-feet) and 9 100 dam3 (7,400 acre-feet) f 8 I from March 1 to October 31, 1984. The computations for determining the natural l flow of the Milk River at its eastern crossing are given in Table 7 in Appendix A. r The total flow recorded at the gauging station on the Milk River at Eastern Crossing of the International Boundary (station 11AA031) from March 1 to
October 31, 1984, was 197 000 dam3 (160,000 acre-feet). The recorded flow is
composed of the unused natural flow of the Milk River plus diverted St. Mary r River water, which is used by downstream Milk River users in the United States.
I EASTERN TRIBUTARIES OF THE MILK RIVER
The waters of the eastern tributaries of the Milk River are divided in accor f dance with the Order of the International Joint Commission dated October 4, f 1921, which stipulates under Rule III that "The natural flow of the eastern (otherwise known as the Saskatchewan or northern) tributaries of the Milk River
I at the points where they cross the international boundary shall be divided equal
ly between the two countries." This order might well be interpreted as requiring
that the division of water be made on a continuing basis. However, the physical
limitation due to transit time in the flow system was recognized. Further anal
ysis showed that the minimum practical time frame for compilation of the natural
J flows at the International Boundary was every 10 days.
Prior to 1937, Canadian use along the eastern tributaries consisted of domestic
irrigation and the Canadian share of the natural flow was not fully used.
1 The construction of Eastend Reservoir (station 11AC055), Huff Lake (station 1 11AC063), and Newton Lake (station 11AC056) by the Government of Canada on the Frenchman River during the late 1930's made an operational division of flow
on this tributary necessary by 1937. In 1938 dams were constructed at both ends
of Cypress Lake (station 11AC037) on the Battle Creek-Frenchman River divide
to allow interbasin storage and transfers of water.
9 1 The redevelopment of several private irrigation projects and the construction l of the Vidora Irrigation Project during the early 1950's resulted in increased use of Battle Creek water in Canada and made an operational division of
flow on this tributary necessary by 1957.
Construction of Altawan Reservoir (station 11AB089) and Spangler Irrigation
Project on Lodge Creek in 1960 made an operational division of flow on this
r tributary necessary by 1961.
l During the runoff season, March 1 to October 31, 10-day computations of the nat J ural flows of Lodge Creek, Battle Creek, and Frenchman River are made to deter mine each country's share. If use by Canada is in excess of its share, then I at the earliest opportunity a delivery of an equivalent quantity of water is made to the United States. During some years the United States may request
I that delivery of deficit water on Battle Creek be delayed to allow more efficient 1 use by United States irrigators. Canada may honor this request if no regulation problems are anticipated by delaying the delivery of water to refund the deficit.
Regular interim reports on the progress of the division of the natural flows
of Lodge Creek, Battle Creek, and Frenchman River at the International Boundary
l are distributed to interested agencies throughout the irrigation season. No
division of flow is made during the winter, as flow and use generally are
low and streamflow records are impractical to obtain.
l Lyons Creek is monitored but does not have sufficient use in Canada at this l time to warrant an operational division of flow. No flow was recorded on this tributary from March 1 to October 31, 1984. 1 In 1984, the following three changes were made to the network of hydrometric
stations in the eastern tributaries:
10 I 1. The station Middle Creek Reservoir Main Outlet (11AB113) was discontinued
because of poor record quality and because data from the station are no
longer required to compute the net depletion of Middle Creek Reservoir;
2. Extremely low water levels in Cypress Lake, caused by the drought condi 1 tions in 1984, necessitated moving the Cypress Lake station (11AC037) from the site on the East Dam to a site on the south shore of the lake; and I 3. Maintenance work on the Cypress Lake West Outflow Canal during the fall of 1984 necessitated moving that station (11AB077) 30 metres (100 feet)
I upstream from its former location.
I Estimates of unmeasured diversions to private irrigation projects in the Lodge Creek, Battle Creek, and Frenchman River basins in Saskatchewan were provided by
Saskatchewan Water Corporation, and in the Lodge Creek and Battle Creek basins 1 in Alberta were provided by Alberta Environment. These estimates are based on reports received from the operators of individual projects and by onsite inspec l tions. An additional adjustment is made for domestic projects in the Battle Creek and Frenchman River basins based on the results of studies conducted by
Canada on domestic use.
1 For the interim reports prepared at the end of apportionment periods, minor
diversion use is estimated, based on a correlation between annual natural
flows and reported use for previous years. The total natural flow for the 1 current year is derived from computed natural flow to date plus an estimate of runoff volume for the rest of the year, dependent on runoff conditions. At
the end of the year, the actual flow is known and minor diversions are finalized,
based on reported use; consequently, some discrepancy exists between interim
and final division computations. Lists of reported and estimated diversions r for 1984 are contained in Appendix B.
11 I The combined usable storage of the six major Canadian reservoirs listed in I Table 15 of Appendix A decreased from 26 300 dam3 (21, 300 acre-feet) or 18 percent, to 2 070 dam3 (1, 680 acre-feet) or 1.5 percent, of the total usable
I storage of 142 200 dam3 (115,300 acre-feet) from March 1 to October 31, 1984.
On October 31, four of the six major Canadian reservoirs were dry.
LODGE CREEK
Severe drought conditions occurred in the Lodge Creek basin in 1984. The l computed natural flow of Lodge Creek below McRae Creek at the International Boundary (station 11AB083) from March 1 to October 31, 1984, was 937 dam3 I (760 acre-feet). This flow is only 2.7 percent of the average natural flow of the previous 34 years of record, and is the lowest computed natural runoff in J 35 years of record. Each country is entitled to SO percent of the natural flow I or 468 dam3 (379 acre-feet). A total flow of 600 dam3 (486 acre-feet) was recorded at the International Boundary. I Deficit deliveries were recorded in 4 of the 24 division periods during the
irrigation season. A deficit of 14 dam3 (11 acre-feet) incurred in the
ninth division period lasted for the remainder of the season, as the amount ' J of water remaining in the Canadian reservoirs was insufficient to permit a
release. J
No return flow was recorded at Squaw Coulee near Willow Creek (station 11AB103)
from the 834 dam3 (676 acre-feet) diverted from Lodge Creek by Spangler 1 Ditch (station 11AB060). l The division of the Lodge Creek natural flow is summarized in Tables 2 and 2A, which follow. The detailed computation of the natural flow is given in Table 1 9 and the historical summary in Table 10 of Appendix A.
I 12 TABLE 2 1 SUMMARY OF LODGE CREEK DIVISION 1984
QUANTITIES IN CUBIC DECAMETRES
DIVISION PERIOD RECEIVED RECEIVED BY U.S.A. AT NATURAL U.S.A. BY ------INTERNATIONAL BOUNDARY FLOW SHARE U.S.A. ABOVE SHARE BELOW SHARE
MAR. 1 - MAR. 10 0 0 0 0 0 0 0 l MAR. 11 - MAR. 20 0 MAR. 21 - MAR. 31 95 48 0 48
APR . 1 - APR . 10 174 87 0 87
APR. 11 - APR . 20 295 148 309 161
APR . 21 - APR. 30 305 153 25 128
MAY1 - MAY10 18 9 191 182
1 MAY 11 - MAY 20 21 ll 74 63
MAY 21 - MAY 31 29 15 l 14
JUN. 1 - JUN. 10 0 0 0 0
JUN. 11 - JUN. 20 0 0 0 0
JUN. 21 - JUN. 30 0 0 0 0
JUL. 1 - JUL. 10 0 0 0 0
JUL. 11 - JUL. 20 0 0 0 0 1 JUL. 21 - JUL. 31 0 0 0 0 AUG . 1 - AUG . 10 0 0 0 0
AUG. 11 - AUG . 20 0 0 0 0
AUG . 21 - AUG . 31 0 0 0 0
SEP. 1 - SEP. 10 0 0 0 0
SEP. 11 - SEP. 20 0 0 0 0
1 SEP. 21 - SEP. 30 0 0 "v 0
OCT. 1 - OCT. 10 0 0 0 0
OCT. 11 - OCT. 20 "v 0 0 0
OCT. 21 -OCT. 31 0 0 0 0
TOTAL 937 4 71 600
1This i s a summar y of data from Table 9 , Appendix A.
13
1 J TABLE 2A 1 SUMMARY OF LODGE CREEK DIVISION 1984 l QUANTITIES IN ACRE~FEET DIVISION PERIOD RECEIVED RECEIVED BY U.S.A. AT NATURAL U.SA BY ------INTERNATIONAL BOUNDARY FLOW SHARE U.SA ABOVE SHARE BELOW SHARE
MAR. 1 - MAR. 10 0 0 0 0 I MAR. 11 - MAR. 20 0 0 0 0 MAR. 21 - MAR. 31 77 39 0 39 l APR . 1 -APR . 10 141 71 0 71 APR. 11 - APR . 20 239 120 251 13 1
APR. 21 - APR . 30 247 124 20 104
MAY1-MAY10 15 7 155 148
MAY11 - MAY20 17 9 60 45
MAY 21 - MAY 31 24 12 1 11
JUN. 1 -JUN. 10 0 0 0 0
JUN. 11 - JUN. 20 0 0 0 0
JUN. 21 - JUN. 30 0 0 0 0
JUL. 1 -JUL. 10 0 0 0 0
JUL. 11 - JUL. 20 0 0 0 0
JUL. 21 - JUL. 31 0 0 0 0
AUG . 1 - AUG . 10 0 0 0 0 l AUG . 11 - AUG . 20 Q 0 0 0 AUG. 21 - AUG . 31 0 0 0 0
(\ SEP. 1 - SEP. 10 0 v 0 0
SEP. 11 - SEP. 20 0 0 0 0
SEP. 21 - SEP. 30 0 0 0 0
OCT. 1- OCT. 10 0 0 0 0
OCT. 11 -OCT. 20 0 0 0 0
OCT. 21 -OCT. 31 0 0 0 0
TOTAL 760 382 486
lAll values are conversions of data from Tabl e 2. Totals and shares may not add or subtract exactly as a result of rounding .
14 1 BATTLE CREEK 1 Severe drought conditions occurred in the Battle Creek basin in 1984. The computed natural flow of Battle Creek at the International Boundary from March
1 to October 31, 1984, was 5 490 dam3 (4,450 acre-feet). This flow is only 17
percent of the average natural flow of the previous 44 years of record and
is the lowest computed natural runoff since 1949. Each country is entitled I to 50 percent of the natural flow or 2 745 dam3 (2,225 acre-feet). A total flow of 2 820 dam3 (2,290 acre-feet) was recorded at the International Boundary. 1 Deficit deliveries were recorded in 4 of the 24 division periods during the
irrigation season. In the interim reports, a deficit of 57 dam3 (46 acre-feet)
remained as of October 31. However, as provincial water-management agencies
supplied updated minor diversion reports at year end and as domestic projects I were accounted for, the deficit increased to 374 dam3 (303 acre-feet). In a normal year, domestic projects do not have a significant effect on the division
and the procedure has been to account for domestic usage only at year end. I Because of the deficit incurred in 1984, this procedure will be evaluated. A return flow of 35 percent of diversion, based on a 1972-76 study, was used for
the Gaff Ditch diversion from Battle Creek. The recorded flow at Gaff Ditch l near Merryflat from March 1 to October 31, 1984, was 2 150 dam3 (1, 740 acre feet) with the return flow computed at 35 percent, or 753 dam3 (610 acre-feet).
During the irrigation season, the return flow was computed to be 16 percent for
Vidora, Richardson, and McKinnon Ditches and 26 percent for Nashlyn Canal. 1 A supplementary gauging station has been operated since 1981 on Shepherd Ditch, a 1 private diversion on Battle Creek, located downstream from Gaff Ditch. A total diversion of 628 dam3 (509 acre-feet) was recorded at this station during 1984,
J and is included in the list of minor diversions for Battle Creek in Appendix B. l 15 I J The division of the Battle Creek natural flow is summarized in Tables 3 and 1 3A, which follow. The detailed computation of the natural flow is given in Table I 11 and the historical summary in Table 12 of Appendix A.
1
J J l l I
J
J J
16
1 TABLE 3 1 1 SUMMARY OF BATTLE CREEK DIVISION 1984
J QUANTITIES IN CUBIC DECAMETRES RECEIVED DIV ISION PERIOD NATURAL U.SA RE CE IVED BY U.S.A. AT BY ------INTERNATIONAL BOUNDARY FLOW SHARE U.S A ABOVE SHARE BELOW SHARE
MAR. 1 - MAR . 1 4 733 367 515 148
MAR. 1 5 - MAR. 25 686 343 482 139
MAR. 26 - AP R. 4 1 074 537 696 159
APR. 5 - APR . 1 4 973 487 307 180 J APR. 1 5 - APR . 24 565 283 176 107
APR . 25- MAY 4 608 304 144 160
MAY 5- MAY14 221 111 35 76
MAY 1 5 - MAY 25 0 0 13 13
MAY 26- JUN. 4 67 34 94 60
JUN. 5 - JUN. 1 4 J 201 101 116 15 JUN. 15 - JUN. 24 229 115 149 34
1 JUN. 25 - JUL. 4 111 56 78 22
JUL. 5 - JUL. 14 24 12 17 5
JUL. 15 - JUL. 25 1 0 0 0 0
JUL. 26 - AUG . 4 0 0 0 0
AUG . 5- AUG . 14 0 0 0 0
AU G. 15- AUG . 25 0 0 0 0 J AUG. 26- SEP. 4 0 0 0 0
SEP. 5 - SEP. 14 0 0 0 0
SEP. 15 - SEP. 24 0 0 0 0
SEP. 25 - OCT. 4 0 0 J 0 0 OCT. 5- OCT. 14 0 0 0 0
OCT. 1 5 - OCT. 25 0 0 0 0
OCT. 26 - OCT. 3 1 0 0 0 0
TOTAL 5 492 2 750 2 822 lThis is a s ummary of data from Table 11, Appendi x A.
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TABLE 3A 1 1 SUMMARY OF BATTLE CREEK DIVISION 1984
QUANTITIES IN ACRE-FEET
RECEIVED DIVISION PERIOD NATURAL U.S.A. RECEIVED BY U.S.A. AT BY ------INTERNATIONAL BOUNDARY FLOW SHARE U.S.A. ABOVE SHARE BELOW SHARE
MAR. 1 - MAR. 14 594 298 418 120
MAR. 1 5 - MAR. 25 556 278 391 113
MAR. 26 - APR . 4 87:!. 435 564 129
APR. 5 - APR . 1 4 J 789 395 249 146 APR . 15 - APR. 24 458 229 143 87
J APR. 25 - MAY 4 493 246 117 130 MAY5-MAY14 179 90 28 62
MAY 1 5 - MAY 25 0 0 11 11
MA Y 26 - JUN. 4 54 28 76 49
J JUN. 5- JUN. 14 163 82 94 12
JUN. 1 5 - JUN. 24 186 93 121 28
l JUN. 25 - JUL. 4 90 45 63 18
JUL. 5 - JUL. 14 19 10 14 4 JUL. 15- JUL. 25 0 0 0 a
JUL 26 - AUG. 4 0 0 0 ()
AUG . 5- AUG . 14 0 0 0 0
AUG . 15 - AUG . 25 I f) (I (I (I AUG . 26- SEP. 4 0 0 0 0
SEP. 5 - SEP. 14 0 0 0 0
SEP. 15 - SEP. 24 0 0 0 0 J SEP. 25 - OCT. 4 0 0 0 0 OCT. 5- OCT. 14 0 0 0 0
OCT. 1 5 - OCT. 25 0 0 0 0
OCT. 26 - OCT. 31 0 0 0 0
TOTAL 4,452 2, 22 9 2, 288
lAll values are convers ions of data f:::om Table 3. Totals and s hares may n ot add or subtract exactly a s a result of rounding. J 18 FRENCHMAN RIVER
Severe drought conditions occurred in the Frenchman River basin in 1984.
The computed natural flow of the Frenchman River at the International Boundary
J from March 1 to October 31, 1984, was 11 920 dam3 (9,660 acre-feet). This
flow is only 14 percent of the average natural flow of the previous 44 years
of record and is the lowest computed natural runoff since computations began J in 1937. Each country is entitled to 50 percent of the natural flow, or 5 960 dam3 (4 ,830 acre-feet). A total flow of 5 640 dam3 (4, 570 acre-feet) was
J recorded at the International Boundary station (11AC041). This flow is the l lowest recorded at this station since record collection began in 1917 .
Interim reports indicated that a surplus of 229 dam3 (186 acre-feet) had been
delivered to the United States by the end of the June 11-20 period, and no
deficits were incurred for the remainder of the irrigation season. However,
as provincial water-management agencies supplied updated minor diversion reports
at year end, and as domestic projects were accounted for, a deficit of 322
dam3 (261 acre-feet) remained as of October 31. In a normal year, domestic
projects do not have a significant effect on the division and the procedure ] has been to account for domestic use only at year end. Because of the deficit incurred in 1984, this procedure will be evaluated.
The division of the Frenchman River natural flow is summarized in Tables 4
and 4A, which follow. The detailed computation of the natural flow is given 1 in Table 13 and the historical summary in Table 14 of Appendix A.
J 19 J J TABLE 4 1 SUMMARY OF FRENCHMAN RIVER DIVISION 1 1984 J QUANTITIES IN CUBIC DECAMETRES DIVISION PERIOD RECEIVED RECEIVED BY U.SA AT NATURAL U.SA BY ------INTERNATIONAL BOUNDARY FLOW SHARE U.S A ABOVE SHARE BELOW SHARE J MAR. 1 -MAR. 10 632 316 123 193 1 MAR. 11 - MAR. 20 670 335 171 164 MAR. 21 - MAR. 31 1 369 685 391 294
J APR. 1 - APR . 10 2 802 1 401 1'~6 1 255 APR. 11 - APR. 20 2 560 1 280 157 1 123 1 APR. 21 - APR. 30 780 390 296 94 MAY1 - MAY10 539 270 443 173
J MAY 11 - MAY 20 966 483 758 275
MAY 21 - MAY 31 436 218 1 391 1 173
J JUN. 1 - JUN. 10 612 306 962 656
JUN. 11 - JUN. 20 459 230 729 499 J JUN. 21 - JUN. 30 89 45 70 25
JUL. 1 - JUL. 10 J 3 2 2 0 JUL. 11 - JUL. 20 0 0 0 0
JUL. 21 ·- JUL. 31 0 0 0 0 J AUG . 1 -AUG. 10 0 0 0 0
AUG . 11 -AUG. 20 0 0 0 0
AUG. 21 - AUG . 31 0 0 0 0
SEP. 1 - SEP. 10 0 0 0 0
SEP. 11 - SEP. 20 0 0 0 0
SEP. 21 - SEP. 30 0 0 0 0
OCT. 1- OCT. 10 0 0 0 0
OCT. 11 -OCT 20 0 0 0 0
OCT 21 -OCT. 31 0 0 0 "v
TOTAL 11 917 5 961 5 639
lThis i s a s ummar y of data from Table 13, Appendix A.
20 1 TABLE 4A 1 SUMMARY OF FRENCHMAN RIVER DIVISION J 1984 QUANTITIES IN ACRE-FEET
DIVISION PERIOD RECEIVED RECEIVED BY U.S.A. AT NATURAL U.S.A. BY ------INTERNATIONAL BOUNDARY FLOW SHARE U.S.A. ABOVE SHARE BELOW SHARE
MAR. 1 - MAR. 10 512 256 100 156
MAR. 11 - MAR. 20 543 272 139 133
1 MAR. 21 - MAR. 31 1 110 555 317 238
APR . 1 - APR. 10 2 272 1 136 118 1 017
APR . 11 - APR. 20 2 075 1 038 1 27 910
APR . 21 - APR. 30 63 2 316 240 76
J MAY1 - MAY10 437 219 359 140
MAY 11 - MAY 20 783 392 615 223 J MAY 21 - MAY 31 353 177 1 128 951
JUN. 1 - JUN. 10 J 496 248 780 532 JUN. 11 - JUN. 20 372 186 591 405
JUN. 21 - JUN. 30 72 36 57 20 J 0 JUL. 1 - JUL. 10 2 2 2
JUL. 11 - JUL. 20 0 0 0 0
JUL. 21 - JUL. 31 0 0 0 0
J AUG . 1 - AUG . 10 0 0 0 0
AUG. 11 - AUG . 20 0 0 0 0
AUG. 21 - AUG . 31 0 0 0 0
SEP. 1 - SEP. 10 0 0 0 0 J SEP. 11 - SEP. 20 0 0 0 0
SEP. 21 - SEP. 30 0 0 0 "v
OCT. 1 -OCT. 10 0 0 0 0
OCT. 11 - OCT. 20 0 0 0 a
OCT. 21 -OCT. 31 0 0 a 0
TOTAL 9,6nl 4,833 4,572
lAll values are conversions of data from Tabl e 4. Totals and shares may not add or subtract exactly as a result of rounding . J 2 1
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J ANNEX A
J TREATY BETWEEN THE UNITED STATES AND GREAT BRITAIN RELATING TO BOUNDARY WATERS; AND QUESTIONS ARISING BETWEEN THE UNITED STATES AND CANADA - ARTICLE VI
INTERNATIONAL JOINT COMMISSION J 1921 Order J 1
J
J
1 22
J TREATY BETWEEN THE UNITED STATES AND GREAT J BRITAIN RELATING TO BOUNDARY WATERS; AND QUESTIONS ARISING BETWEEN THE UNITED STATES AND CANADA
ARTICLE VI
The High Contracting Parties agree that the St. Mary and Milk Rivers and their tributaries (in the State of Montana and the Provinces of Alberta and Saskatchewan) are to be treated as one stream for the purposes of irrigation and power, and the waters thereof shall be apportioned equally between the two countries, but in making such equal apportionment more than half may be taken from one river and less than half from the other by either country so as to afford a more beneficial use to each. It is further agreed that in the division of such waters during the irrigation season, between the 1st of April and 31st J of October, inclusive, annually, the United States is entitled to a prior appropriation of 500 cubic feet per second of the waters of the Milk River, or so much of such amount as constitutes three-fourths of its natural flow, and ] that Canada is entitled to a prior appropriation of 500 cubic feet per second of the flow of St. Mary River, or so much of such amount as constitutes three fourths of its natural flow. J The Channel of the Milk River in Canada may be used at the convenience of the United States for the conveyance, while passing through Canadian territory, of waters diverted from the St. Mary River. The provisions of Article II of this treaty shall apply to any injury resulting to property in Canada from the J conveyance of such waters through the Milk River. The measurement and apportionment of the water to be used by each country shall from time to time be made jointly by the properly constituted reclamation J officers of the United States and the properly constituted irrigation officers of His Majesty under the direction of the International Joint Commission. J
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23
J 1 INTERNATIONAL JOINT COMMISSION J ORDER IN THE MATTER OF THE MEASUREMENT AND APPORTIONMENT OF THE WATERS OF THE ST. MARY AND MILK RIVERS AND THEIR TRIBUTARIES IN THE STATE OF MONTANA AND THE PROVINCES OF ALBERTA AND SASKATCHEWAN. Whereas by Article VI of the Treaty entered into between the United States of America and His Majesty, the King of the United Kingdom of Great Britain and Ireland and of the British Dominions beyond the Seas, Emperor of India, signed at Washington on the 11th of January, 1909; And whereas the said Reclamation and Irrigation Officers have been unable to agree as to the manner in which the waters mentioned in the said Article VI should be measured and apportioned; And whereas, before giving directions as to the measurement and apportion ment of the said waters, the International Joint Commission deemed it proper to hear such representations and suggestions thereon as the Governments of the United States and Canada, the Provinces of Alberta and Saskatchewan, and the State of Montana, and as corporations and persons interested might see fit to make, and for such purposes sittings of the Commission were held at the follow ing times and places: At the city of St. Paul, in the State of Minnesota, on the 24th, 25th, 26th, 27th, and 28th days of May, 1915; at the city of Detroit, in the State of Michigan, on the 15th, 16th, and 17th days of May, 1917; at the city of Ottawa, in the Province of Ontario, on the 3rd, 4th, and 5th days of May, 1920; at the village of Chinook, in the State of Montana, on the 15th day of September, 1921; and at the city of Lethbridge, in the Province of Alberta, on the 17th day of September, 1921, when counsel and representatives of the said Governments, corporations, and persons appeared and presented their views; And whereas, pending final decision as to the proper method of measuring and apportioning said waters, interim orders with reference thereto have been made by the International Joint Commission from time to time, the last of such orders bearing the date of 5th day of April, 1921; And whereas the members of the International Joint Commission have unani J mously determined that the said Reclamation and Irrigation Officers should be guided in the measurement and apportionment of said waters by the directions and instructions hereinafter set forth: IT IS THEREFORE ORDERED AND DIRECTED by the Commission in pursuance of the powers conferred by the said Article VI of the said Treaty that the Reclamation and Irrigation Officers of the United States and Canada shall, until this order is varied, modified, or withdrawn by the Commission, make jointly the measurement and apportionment of the water to be used by the United States and Canada in accordance with the following rules:
St. Mary River. I. (a) During the irrigation season when the natural flow of the St. Mary River at the point where it crosses the international boundary is six hundred and sixty-six (666) cubic feet per second or less Canada shall be entitled to three-fourths and the United States to one-fourth of such flow.
l
1 24 J 1 (b) During the irrigation season when the natural flow of the St. Mary Rive r at the point where it crosses the international boundary is more than six hundred and sixty- six (666) cubic feet per second Canada shall be entitled to J a prior appropriation of five hundred (500) cubic feet per second, and the excess over six hundred and sixty-six (666) cubic feet per second shall be divided equally between the two countries. 1 (c) During the non-irrigation season the natural flow of the St. Mary River at the point where it crosses the international Qoundary shall be divided equally between the two countries.
Milk River. II. (a) During the irrigation season when the natural flow of the Milk River at the point where it crosses the international boundary for the last time (commonly and hereafter called the Eastern Crossing) is six hundred and sixty six (666) cubic feet per second or less, the United States shall be entitled to three-fourths and Canada to one-fourth of such natural flow. (b) During the irrigation season when the natural flow of the Milk River at the Eastern Crossing is more than six hundred and sixty- six (666) cubic feet per second the United States shall be entitled to a prior appropriation of five J hundred (500) cubic feet per second and the excess over six hundred and sixty six (666) cubic feet per second shall be divided equally between the two coun tries. (c) During the non-irrigation season the natural flow of the Milk River J at the Eastern Crossing shall be divided equally between the two countries .
Eastern Tributaries of Milk River. III. The natural flow of the eastern (otherwise known as the Saskatchewan or J northern) tributaries of the Milk River at the points where they cross the international boundary shall be divided equally between the two countries.
Waters not naturally crossing the boundary. IV. Each country shall be apportioned such waters of the said rivers and of any tributaries thereof as rise in that country but do not naturally flow across the international boundary. V. For the purpose of carrying out the apportionment directed in Paragraphs I, II, and III hereof the said Reclamation and Irrigation Officers shall jointly J take steps: (a) To ascertain and keep a daily record of the natural flow of the St. Mary River at the international boundary, of the Milk River at the Eastern Crossing, and of the eastern tributari es of the Milk River at the international boundary by measurement in each case: (1) At the gauging station at the international boundary; (2) At all places where any of the waters which would naturally flow across the international boundary at that particular point are diverted in either country prior to such crossing; (3) At all places where any of the waters which would naturally flow across the international boundary at that particular point are stor ed, or the natural flow thereof increased or decreased prior to such crossing.
J 25 J (b) To fix the amount of water to which each country is entitled in each case by applying the directions contained in paragraphs 1, 2, and 3 hereof to the total amount of the natural flow so ascertained in each case. (c) To communicate the amount so fixed to all parties interested, so that the apportionment of the said waters may be fully carried out by both countries in accordance with the said directions. VI. Each country may receive its share of the said waters as so fixed at such point or points as it may desire. A gauging station shall be established and maintained by the Reclamation or Irrigation Officers of the country in which any diversion, storage, increase, or decreases of the natural flow shall be made at every point where such diversion, storage, increase, or decrease takes place. VII. International gauging stations shall be maintained at the following points: St. Mary River near international boundary; the north branch of Milk River near international boundary; the south branch of Milk River near international bound ary; Milk River at Eastern Crossing; Lodge Creek, Battle Creek, and Frenchman J River, near international boundary; and gauging stations shall be established and maintained at such other points as the Commission may from time to time approve. J VIII. The said Reclamation and Irrigation Officers are hereby further author ized and directed: (a) To make such additional measurements and to take such further and other steps as may be necessary or advisable in order to insure the apportionment of the said waters in accordance with the directions herein set forth. (b) To operate the irrigation works of either country in such a manner as to 1 facilitate the use by the other country of its share of the said waters and subject hereto to secure to the two countries the greatest beneficial use there of. (c) To report to the Commission the measurements made at all international and other gauging stations established pursuant to this order. IX. In the event of any disagreement in respect to any matter or thing to be done under this order the said Reclamation and Irrigation Officers shall report J to the Commission, setting f orth fully the points of difference and the facts relating thereto. X. The said order of t he Commission, dated the 6th day of April 1921, is hereby withdrawn, except with respect to the report to be furnished to the I Commission thereunder. Dated at Ottawa, Canada, this 4th day of October, 1921. 0. GARDNER, 1 C. A. MACGRATH, C. D. CLARK, HENRY A. POWELL, W. H. HEARST, MARK A. SMITH.
J 26 1 1
1
1
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1
ANNEX B 1
International System of Units
1 (SI) Conversions 1
1
f
1
1 1 1
1 2 7 1 1 INCH-POUND TO INTERNATIONAL SYSTEM OF UNITS 1 (SI) CONVERSION
Since 197 5, the Report to the International Joint Commission on the Division 1 of the Waters of the St. Mary and Milk Rivers has used dual units (SI and inch pound).
The two inch-pound units that were used in previous reports were cfs-days and acre-feet.
1 cfs-day = 86,400 cubic feet
1 acre-foot = 43,560 cubic feet J 1 cfs-day a 1.9835 acre-feet
1 The SI unit replacing the inch-pound units is the cubic decametre (dam3). 1 dam3 = 1000 cubic metres 1 1 cubic metre = 35.315 cubic feet 1 dam3 = 35 315 cubic feet ' 1 1 acre-foot = 1.2335 dam3 1 cfs-day = 2.4466 dam3
1 dam3 • 0.8107 acre-foot 1 l
1 I 1
1 28 1
1 1 1
1
1
1 ANNEX C
1 List of Gauging Stations 1 J l J 1
1 1
1 29
J INTERNATIONAL GAUGING STATIONS OPERATED JOINTLY 1 BY CANADA AND THE UNITED STATES
ST. MARY AND MILK RIVER DRAINAGE BASINS 1 1984 Map Index Station Name l ST. MARY RIVER BASIN
1 05AE027 St. Mary River at International Boundary 05AE029 St. Mary Canal at St. Mary Crossing near Babb, Montana
05AE033 Swiftcurrent Creek at Sherburne, Montana 1 05AE036 Lake Sherburne at Sherburne, Montana MILK RIVER BASIN 1 llAAOOl North Milk River near International Boundary 11AA005 Milk River at Milk River
1 11AA025 Milk River at Western Crossing of International Boundary J 11AA031 Milk River at Eastern Crossing of International Boundary 11AA032 North Fork Milk River above St. Mary Canal near Browning, I Montana 11AA033 South Fork Milk River near Babb, Montana 1 LODGE CREEK TRIBUTARY BASIN llABOOl Middle Creek below Middle Creek Reservoir
1 11AB009 Middle Creek near Saskatchewan Boundary
11AB060 Spangler Ditch near Govenlock
11AB080 Middle Creek Reservoir 1 11AB083 Lodge Creek below McRae Creek at International Boundary 11AB089 Altawan Reservoir near Govenlock l 30
1 J BATTLE CREEK TRIBUTARY BASIN l 11AB018 Nashlyn Canal near Consul 11AB027 Battle Creek at International Boundary
1 11AB044 McKinnon Ditch near Consul J 11AB058 Richardson Ditch near Consul 11AB075 Lyons Creek at International Boundary J 11AB077 Cypress Lake West Outflow Canal 11AB078 Cypress Lake West Inflow Canal
11AB084 Vidora Ditch near Consul I 11AB085 Cypress Lake West Inflow Canal Drain 11AB102 Gaff Ditch near Merryflat I FRENCHMAN RIVER TRIBUTARY BASIN llACOOl Frenchman River below Eastend Reservoir
11AC037 Cypress Lake
11AC041 Frenchman River at International Boundary 1 11AC052 Eastend Canal near Eastend J 11AC054 Newton Lake Main Canal 11AC055 Eastend Reservoir
1 11AC056 Newton Lake
11AC060 Cypress Lake East Outflow Canal 1 11AC062 Frenchman River below Newton Lake 1 11AC063 Huff Lake 11AC064 Belanger Creek Diversion to Cypress Lake j 11AC065 Huff Lake Gravity Canal l 11AC066 Huff Lake Pumping Canal 1
I 31 1 1 GAUGING STATIONS OPERATED INDEPENDENTLY I BY EITHER CANADA OR THE UNITED STATES I IN THE HEADWATERS OF THE ST. MARY AND MILK RIVER DRAINAGE BASINS
1984
Map Index Station Name Operated By J ST. MARY RIVER BASIN 1 5-0145* Swiftcurrent Creek at Many Glacier, u.s.A. Montana f 5-0175* St. Mary River near Babb, Montana u.s.A.
MILK RIVER BASIN J 11AA028* Bear Creek near International Boundary Canada
11AA029* Miners Coulee near International Boundary Canada
J LODGE CREEK TRIBUTARY BASIN 11AB008* Middle Creek above Lodge Creek Canada 1 11AB082* Lodge Creek at Alberta Boundary Canada 11AB091 Michel Reservoir near Elkwater Canada
11AB092 Greasewood Reservoir near Elkwater Canada j 11AB094 Bare Creek Reservoir near Elkwater Canada 11AB097 Cressday Reservoir near Cressday Canada
11AB098 Jaydot Reservoir near Jaydot Canada
11AB099 Mitchell Reservoir near Elkwater Canada
11AB103 Squaw Coulee near Willow Creek Canada I 11AB104 Massy Reservoir near Elkwater Canada
1 32
1 l 11AB108* Middle Creek near Govenlock Canada
11AB114 Middle Creek Reservoir Bedford Outlet Canada
11AB115 Middle Creek Reservoir Flood Spillway Canada
BATTLE CREEK TRIBUTARY BASIN
11AB020* Shepherd Ditch near Consul Canada
11AB090 Reesor Reservoir near Elkwater Canada
11AB095 Adams Lake Canada
11AB096* Battle Creek near Consul Canada
llABlOl* Battle Creek below Nashlyn Project Canada 1 11AB117* Battle Creek at Alberta Boundary Canada 11AB118* Battle Creek below Wilson's Weir Canada 1 FRENCHMAN RIVER TRIBUTARY BASIN 11AC025* Dennie! Creek near Val Marie Canada
11AC068 Val Marie Pump No. 1 Canada
ROCK CREEK TRIBUTARY BASIN
6-1695* Rock Creek below Horse Creek near u.s.A. International Boundary
* Data not included in this report or appendices 1 1
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j 33