, Weather forecast by WP Wunderground & Denver Snow Removal, Happy Summer! Recreation » Sly Park Recreation Area (SPRA) at Jenkinson Lake » Sly Park Boating. google_ad_slot = "4396478088"; Many campsites are on or near the water with direct beach access. Tahoe area - Duration: 3:16. Camping at Jenkinson Lake is big fun. The water temperature at the Marina ramp is 66F, The water temperature at the Marina ramp is 68F, Boating World Magazine – Free On-line issues. Jenkinson Lake El Dorado - California. Jenkinson Lake (a.k.a. The coolest thing happened today, I was cruising around the lake in my boat and an eagle flew right over my head about 10′ up and followed me for about a hundred yards.