402 NATIONAL OCEANOGRAPHIC PROGRAM—1965 
Projects: 
Compile results of extensive sampling und conduct additionul 
sampling, as necessary, of each lake, successively, and of its tributary and 
outflow rivers to determine the properties of the water and the foreign 
material in transport. Compile concurrent observations of the related factors. 
Select indicator sampling stations for each lake basin and initiate a 
continuous sampling program to determine water quality at these stations. 
Derive the relationships between quality determinations made at the 
indicator stations and quality conditions throughout the lake basin, thereafter 
derive variations in water quality from the indicator stations. 
Prepare and publish charts showing normal seasonal distribution of 
various factors comprising water quality in the lakes, 
Develop methods to determine the dispersion and deposition of 
waterborne foreign materials. 
Investigate the practicability of forecasting those properties of 
water which bear on quality. 
Conduct sound propagation tests, analyze and publish the results. 
7. CRUSTAL MOVEMENT. 
General Description of the Program: During the last glacial period, the 
Great Lakes region was depressed. At the present time the crust is rebounding. 
The rate of rise is not uniform throughout the region and is so slow as to be 
difficult to measure when considering short periods of time. Its long=range 
effects on depths in harbors and navigation channels and upon outflow rates 
from the lakes is very important. This phenomenon can be studied from the 
geological history of the region and from water level records, Both methods 
must be used to verify or revise the theories now widely held, Extensive 
field investigations may be required. The kmowledge gained from this program 
will provide information for harbor and channel design and for refinement of 
lake regulation plans. 
Investigate past glacial lake levels from beach traces and derive 
erustal movement rates therefrom. 
Re-evaluate crustal movement rates derived from existing lake 
level records. Z 
Compile charts showing underwater topography extended up to shore- 
lines of highest lake levels in the past glacial period for use in crustal 
movement studies. 
Prepare outlook of future crustal movement and determine effects 
on harbors, navigation channels and lake outflows. 
. 8. _CROUND WATER, 
General, Description of the Program: Groundwater is a steady source 
of water to the Great Lakes. Since groundwater flows change Slowly, Kknow~ 
ledge of its behavior is very important in forecasting the water Gupplics to 
the lakes, A related phenomenon, possible deep subterrancan flows between lakes 
and into or out of the regional basin awaits determination. Little is known 
