Water Bubbles

It started raining yesterday morning and continued to do so for 12 hours. It stopped briefly during the overnight, but has started again. Normally, a rainy weekend doesn't bother me. More time to curl up on the couch reading, watching a movie, or napping (most likely.) This weekend is different. On Wednesday and Thursday, the decking and studs for the first floor addition were put up. There's no second story floor yet (more to come on that in a separate post.) All this rain means that the addition could get wet. Luckily, we knew beforehand that it would rain, and rain a lot. Tarps were bought by the cartload. But I didn't expect this to happen:
This is one of three water bubbles that have collected in the tarps. I tried pushing the water out of them, but the angle is too steep and there's a lot of water. The tarps are stretched to their max now and the water is starting to drip through the threads. As a stop gap measure, I bought more plastic, laid it on the floor and found as many buckets as I could to collect the dripping water.

Tomorrow had better be a sunny day.