@Dutchs Looks like Crimson Sweet watermelons you have there... It's a bad year for watermelons, cantaloupes and peaches. Where you live you need a dry late May and early June, me, I need a dry June. The last month melons and peaches get ripe, they need dry weather. Dry weather concentrates the sugars. Lots of water (rain) dilutes the sugars in the fruit and melons, even squash, lots of squash but not a lot of flavor. We've had tons of rain in the last 30 days... Not a good fruit or melon year, that's the way the ball bounces...
But, rain like this produces tremendous sweet corn, okra and peas. It's always a trade off... some plants do great, some, not so good.
I saw all the photos you posted about the watering system you installed, a good thing. Watering all of your plants the same... not a good thing. All of them need plenty of water at certain times as they grow, there are times when they don't need water, water is the last thing they need.
Next year I kindly recommend you plant your veggies next to each other according to water needs. You will have a pleasant result.