Nature Notes From Crater Lake
Volume 6, No. 2, July 1933
The Lake and Moods of May
By David LeC. Evans, Ranger-Naturalist
March, it is said, comes in like a lion
and departs like a lamb, but at Crater this year it has continued like
the proverbial lion until the last few days of may. These last few days
have brought out the fact that nowhere can spring be more glorious than
up here above the snowline.
This combination of perdition and
heaven, climatically speaking, has revealed the lake in two very
distinctive moods. The numerous unfortunates who arrived before this
return of spring were lucky to see the lake at all, for as it snowed and
rained, banks of vapor and cloud were whipped down into the huge
caldron, hiding from view the then turbulent waters of the lake. Let us
consider the description of this phase sufficient, despite its
briefness. It is the stormy and disappointing mood.
On the other had, those fortunate who
have been viewing the lake during this last week of May, have departed
with a picture never to be forgotten. Standing on the top of a fifteen
foot snowbank, they gaze, in the brilliant sunlight, into a gigantic
blue mirror, set in sloping frame of glistening white, spotted with
tints of green, red and brown. There are two Wizard Islands, a duo of
Hillman Peaks, massive Llao Rock stands majestically, capped with a
white, musing over its reflection in the blue waters at its base. Not a
breath of air stirs, and all is silence except for the distant 'swish'
of sliding snow. Only on such a day could Joaquin Miller have called
this the "Silent Sea".
As interesting as the lake, itself, are
the snowbanks at the water's edge and their reflections. It takes little
imagination to see that the base of Dutton Cliff a series of very ornate
arrows, unfortunately, not pointing towards true north but due east.....
A perfect butterfly of the swallow tail
variety, perfect in every detail, spends the entire day, floating
easterly below Cloudcap, but is ever stationary.....
Our Wineglass of the eastern end of the
lake stand erect, and then "bottoms up" on the blue-clothed table.....
For a person of geological mind, the
imagination runs rife. A great creature of the Mesozoic period is seen
flying south, an Ichthyosaur (what a name!) with a triangular head and
great expanse of wing.
A gigantic fish of ancient vintage
(Paleozoic) pursues friend Pterosaur, but can never cut down that
constant gap that separates them.....
The ornate arrows suggest the early
Indian visitors to Crater Lake, as does the upper half of a war shield
of very intricate and detailed design.
In conclusion, such stillness leas to
that common question, "What, the lake is never coated over with ice? How
very strange," Invariably the answer is concluded "- - - but
occasionally there is a slush ice." We could give as the reason for this
lack of ice two factors: (1) In a deep lake the later at the surface, as
it approaches the freezing point become heavier and sinks. The warmer
water beneath rises and this continuous vertical circulation assists in
preventing the formation of ice at the surface; and (2) the ever present
winter storms keep the surface in such a state of agitation, that ice
cannot form. This last week in may has made the latter pint a strong
one, for during this cold week, still weather, a definite slush ice has
been observed on the surface, in the early morning.