3) The new 74 photo. could a flood occur after September? I'm not familiar with the seasons over there?
In those days high levels would occur mostly in the fall and winter from rainfall and in early spring from snow melt (sometimes combined with rain). The river's drainage area is huge, so it includes lots of land of both low and high elevations.
Do you think they will be able to provide info on the photo. proper date, day, and month?
I guess we can just call...
If you need assistance or have a "How do I?" question, please call the GIS Technical Support Line: (360) 397-2002 ext. 4652
Added: I called the number and nobody answered. I then hit zero for the operator and had a Cooper discussion with him
he told me to leave a message, he switched me back over and I left a message along with my number.
Update: Clark County called me back. she couldn't verify the date at the moment. she said she would get back to me with more information tomorrow.
Update2: Debbie called me back from Clark County. the photo was taken
May 5, 1974 Verified....