In a large bowl, combine the sliced cucumbers and salt. Toss to coat and let sit for about 15 minutes to draw out excess moisture.
After 15 minutes, drain the cucumbers and gently pat them dry with paper towels.
In a separate bowl, whisk together the sour cream, apple cider vinegar, dill, garlic powder, sugar, and black pepper until smooth.
Add the drained cucumbers to the dressing and toss until well coated.
Refrigerate the salad for at least 30 minutes before serving to allow the flavors to meld.
Serve chilled, garnished with additional dill if desired.