There is some information available on the Canine Inherited Disease Database.
Canine Inherited Disorders Database - Introduction
A lot of the inherited disorders are either unknown inheritance, recessive, or recessive with incomplete penetrance (which means that some dogs who have the genes get the disease, some do not, not really helpful). Careful record-keeping is probably the key to lowering or elimination of most disorders. Although records may be available for breeding dogs, it is hard to collect data about siblings that were never used in a breeding program. Using the healthiest dogs that have been tested for health issues is the best that can be done now, until there are genetic markers for all the inherited disorders, it is still just a crap-shoot.