I would say yes and no. The fish that did spawn would lose their nests, or I should say their first nesting attempts. I am of the understanding that a fish may spawn but not necesarrily lay all of her eggs as evidence by people catching fisht hat still have some eggs in them on into summer. So while they may not be able to make as strong a run on their second attempt at a spawn I would think that some fish would find some success.

Plus due to the fact that not all fish go at the same time the class would not be "lost." On Barren there really is not much cover to provide suitable spawning habitat with the lake 15 foot below summer pool as it is in your scenario so again I would think that some fish would not spawn at that time due to the lack of cover and those that do not would be able to make at least some headway when conditions improve.