This cache is placed for the Dog Pound CCE2 Event held on September 26, 2020 in Water Valley. We would prefer if you wait until 10:00 a.m. on September 26 before attempting to find this cache.
The cache is not at the posted coordinates, but 20m to the S.E. is a sign that will hep you find this cache...

Welcome to Winchell Lake!
On the "Over the Rainbow" sign, the information you seek is waiting.
Find th following numbers:
1). Low Average Length: ?
2). High Average Length: ?
3). Average Weight: ?
4). Year of Alberta Recod: ?
5). Weight of Alberta Record: ?
The final stage can located at the following coordinates:
N51 AB.CDE W114 FG.HJK where:
A=Average Weight+0.5
B= (3/4(Weight of Alberta Record))+0.1
C=Low Average Length/10
D=5(Average Weight )-0.5
E=3rd Digit from left in (Year of Alberta Record)/2
F=2(Average Weight)
G=(3/4(Weight of Alberta Record))+0.1
H=First digit from left of Low Average Length
J=First digit from left of (High Average Length)+1
K=(Fourth digit from left of Year of Alberta Record)+6

You can validate your puzzle solution with certitude.