I have asked a lot about this information before but not really with any proper data provided on our situation so here I go.
We have a creek we are looking to dredge, most of it has been mined recently other then some gullys that havent been touched since the rushes but these gullys are very very rich, we are making very good gold out of it just by going by hand, last trip 20 buckets (probably about 1 cubic metre of ground) yielded about 4 grams and we didnt even prospect for more then quater of an hour.
I have finally encouraged my prospecting partner to get a dredge, he thinks a 2 inch but I think that would be a waste of money as it wouldnt really be any faster right?
I am thinking a 4 Inch dredge as it would be a lot quicker and it could still fit in the creek, but as I said they are small gullys and im not sure a 4 inch would beable to function, here are some pictures of the creek after a medieum rain, this is probably about double the flow when it is normal or low, but it can get about double this again during a heavy flood. Looking at the creek like this would a 4 inch be suitable or would it just not fit or work even in higher water ?
Also would it be to rocky to be efficent for a dredge? That is a picture of the matirel above, there arent many big boulders but lots of medieum rocks ( some of the larger ones of the left there )
That there is pointing to the spot we got really good results at, it was pretty much just the middle of the river, there was very slight inside bend where the gravel was a bit higher but that was it .
Thanks so much for any info it is really appreciated .