Ground-Water Hydrology of the Upper Klamath Basin, Oregon and ...

Figures
Figure 1. Map showing the upper Klamath Basin, Oregon and California, and major
geographic features… ……………………………………………………………… 3
Figure 2. Map showing distribution of precipitation in the upper Klamath Basin, Oregon
and California, and mean monthly precipitation at selected precipitation
measurement stations… …………………………………………………………… 5
Figure 3. Map showing irrigated areas in the Bureau of Reclamation Klamath Project,
Oregon and California… …………………………………………………………… 7
Figure 4. Map showing hydrogeologic units of the upper Klamath Basin, Oregon and
California… ………………………………………………………………………… 11
Figure 5. Graph showing cumulative distribution of transmissivity values estimated
from specific-capacity tests for wells producing from Quaternary sediment,
Tertiary sedimentary rock, and Tertiary volcanic rock in the upper Klamath
Basin, Oregon and California……………………………………………………… 17
Figure 6. Schematic representation of sources of ground-water recharge, flow paths,
and mechanisms of ground-water discharge in the upper Klamath Basin,
Oregon and California… …………………………………………………………… 20
Figure 7. Map showing principal areas of ground-water discharge to streams and
major springs in the upper Klamath Basin, Oregon and California, and
selected stream-gaging stations… ………………………………………………… 24
Figure 8. Graph showing annual precipitation at Crater Lake National Park, Oregon,
and the cumulative departure from average precipitation from 1932 to 2005… …… 25
Figure 9. Graph showing September mean discharge of the Sprague River near
Chiloquin, Oregon (USGS gaging station number 11501000), and the
cumulative departure from average precipitation at Crater Lake, Oregon… ……… 27
Figure 10. Graph showing monthly mean discharge and September mean discharge of
the Williamson River below Sheep Creek near Lenz, Oregon (USGS gaging
station number 11491400), and the cumulative departure from average
precipitation at Crater Lake, Oregon………………………………………………… 28
Figure 11. Graph showing relation between the September mean discharge of the
Williamson River below Sheep Creek near Lenz, Oregon (USGS gaging
station number 11491400), and the cumulative departure from average
precipitation at Crater Lake, Oregon………………………………………………… 29
Figure 12. Graph showing discharge measurements of Spring Creek, estimated
ground-water discharge to the lower Williamson River between Kirk and
Chiloquin, and cumulative departure from average precipitation at Crater
Lake, Oregon………………………………………………………………………… 30
Figure 13. Graph showing monthly mean discharge and January to March mean
discharge of Annie Spring near Crater Lake, Oregon (USGS gaging station
number 11503000), and the cumulative departure from average precipitation
at Crater Lake… …………………………………………………………………… 31