water, less than C C. (reference: Blue Dolphin Labrador Expedition, Oceanographic 

 Report No. 1, D.C.Nutt and R.H. Backus, 1950). A brief study of Lake Melville in March 

 1952 by the Blue Dolphin winter party indicated marked contrast and transitions between 

 summer and winter regimes. It is desirable to investigate further this interesting 

 feature of the estuary. 



The early summer work in the estuary began on June 29th with the establishment of 

 the Outer section in Hamilton Inlet consisting of five oceanographic stations and eleven 

 STD stations from Cape Porcupine to the White Bear Islands. During the following three 

 days six more sections were established or reoccupied to give a total of seventeen 

 oceanographic stations and forty-two STD stations. 



On July 2nd work was begun in Lake Melville with the establishment of a 200 meter 

 station off the entrance to Pike Run. July 3rd was spent in the examination of the Back- 

 way and establishment of oceanographic stations in the two basins "ound therein, and the 

 third Backway station was established on July 4th. 



To obtain a more complete understanding of the mixing and warming that takes place 

 between the Narrows and the main body of the Lake the number of observations in this area 

 was increased. Accordingly, on July 4th a station was established off Eskimo Island 

 and a section of two stations was established off Reed Point in addition to reoccupation 

 of the Gull Island section. On July 5th and 6th the major grid of twelve stations in the 

 Lake was reoccupied and the Goose Bay grid was expanded to six stations. 



On July 8th and 9th river volume measurements were made in the four principal 

 affluents to the estuary. The method used was as follows. At a suitable site along 

 the river bank a base line was measured with a surveyor's chain. From one end of the 

 base line a cross section line perpendicular to the course of the riyer was establish- 

 ed and marked on each bank. A canoe, dory, or motorboat was then anchored at various 

 current stations on this cross section line and its position determined by transit 

 angle from the opposite end of the base line. Six to twelve current stations were 

 established about 100 to 200 feet apart depending on the width of the river. At each 

 station a hand lead sounding and surface current measurement by means of a Price current 

 meter were taken. For river flow computation a cross section of the river will be 

 plotted and divided into flow segments about each current station. The surface current 

 measurement will be corrected by the rapid stream factor of 0.9 (Hoyt and Grover, 1912) 

 ror applying to the segment, and the total river flow then computed by summing the flow 

 of each segment. 



Points chosen for the cross sections were above the river mouths to avoid in so 

 far as possible any tidal influence from the Lake. The Hamilton was measured 1.5 miles 

 above the entrance to Mud Lake, the Goose 3.5 miles above its mouth, the Kenamu 1 mile 

 above its mouth, and the North West River at the narrows between Little and Grand Lakes. 

 The cross-section line was in each case marked and described so that it might be re- 

 covered at a later date. 



An additional survey was made of the main spring freshet channel of the Goose River, 

 for during the spring a part of the volume of this river diverts from the main channel 

 running into Goose Bay and empties directly into Terrington Basin. Data for a cross - 

 sectional profile was obtained from measurements made with surveyor's chain, level and 

 Philadelphia rod. 



On July 10th an Investigation of the hydrographic conditions in Grand Lake was made 

 in Harvey Montague's thirty-foot motorboat Mayflower . Grand Lake is a deep freshwater 

 lake thirty-five miles long fed by four rivers. Three oceanographic stations were oc- 

 cupied; one at each end and one in the middle. A BT longitudinal section was made from 

 the narrows to the head of the Lake totaling ten posits. The greatest depth obtained was 



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