Area/Topic  |  Bibliography   |  Background   |  Hypotheses   |  Home


KRIS Gualala : Picture Page

Area Wheatfield
Topic Temperature: Floating Weekly Average of Wheatfield Fk and Fuller 2000

temp_gri_sf_wheat.gif 127K  Click on image to enlarge (127K).

The map above from the KRIS Gualala Map project shows a Gualala Redwoods, Inc temperature monitoring sites in the lower Wheatfield and lower South Fork with coding for suitability for coho. Sites with floating weekly maximum average water temperatures (MWAT) greater than 16.8 C in all years are coded red while those sites under that threshold are coded green. Sites that are under this threshold in some years but over in others are in yellow.

alden_temp_wshsize_regression.gif 17K  Click on image to enlarge (17K).

The Chart above was taken from Appendix 9 of the Gualala River Watershed Synthesis Report and represents Gualala River locations versus sites labeled "old growth" and is intended to show that water temperatures in smaller streams are naturally cooler than larger streams. The relationship represents data from Henry Alden of Gualala Redwoods, Inc. who also provided information about the old growth sites: "The old growth watersheds, by increasing acreage, are Cow Creek (93% uncut old growth), Squaw Creek (61% uncut old growth) Canoe Creek (62% uncut old growth) and Bull Creek, where the stream flows through 3 miles of uncut old growth, including the Rockefeller Grove, before it gets to the Bull Creek temperature station."

To learn more about this topic click Info Links