A nice, clean, small park with few amenities. The staff is friendly and helpful. An interesting "no alcohol on premises" policy (glass of wine with dinner, anyone?). We stayed on site 56, which while shallow, was double wide, which provided plenty of room to park the Suburban. Most sites are small with little privacy, but the grounds are well cared for. We had full hookup, and everything worked as it should.
Spring Gulch is not a "Resort" and should not be charging a "Resort Fee." That said, Spring Gulch is a large, very well run campground. The sites on the hill (1500-1600) are spacious and clean. Restrooms were immaculate with roomy showers (and changing stalls). Aside from barking dogs (why do some dog owners feel that's okay at 7 am?) the place is well run, with a friendly and courteous staff. Although it's a bit expensive, I would definitely stay here again if I were back in the area.
Spent two nights while on shake down cruise with new trailer. A little rough around the edges for a KOA, but nice place with friendly staff. Site #41 on the creek was very nice. Restrooms were clean. Borders a dairy farm, so the air can be a little pungent. Not sure how the smell would be in July/August. Would definitely go back.