Laguna "the Maria" This lake is 22 km from Comala. There is a recreational center with cabins (hotel), camping and modern RV spaces and a restaurant. There are small boats for rent but I'd suggest not for for fishing since the lake water looks stagnant this time of year. We did see lots of fish along the shore.
We walked the kilometer to the lake and camping-picnic areas but you can drive all the way in along the lake. The only other people there were some 'birders' walking with their guide. Everything would be greener after the rainy season but it was still pretty. Take your mosquito repellant.
http://sparks-mexico.com/Assorted/LaMaria/index1.htm