Iggy asked:

Can this skid steer pictured he

http://igor.chudov.com/misc/ebay/tmp...i/291.JPG.html

be used to rearrange that gravel a little bit to restore the grade?

Ig... so far (unless I missed it) nobody has hit on the basic reason for
your problem.

Unless the gravel is bound by some cementaceous substance, re-grading the
gravel won't do a thing for your water drainage. Gravel is highly
pourous to water -- it's used in things like percolation fields and
French drains to allow water to enter without allowing larger debris to
penetrate.

Re-grading the gravel won't cure the underlying problem: And the problem
TRULY "underlies" the gravel.

Scrape ALL the gravel aside, and re-grade the earth below it. THEN
replace and smooth the gravel, and you'll be fine.

LLoyd