I love this map, mainly as it addresses one of my personal pet peeves, that being city maps with way too few buildings. All too often we see this in published maps that are portrayed as being exacting representations(down to showing blown-up map sections with street names, building names, etc.), but that have way too few buildings to support a community of its size. Nice job on this!
One style question: water is generally darker the farther from the bank/shore it is, so do you prefer to make the water dark at the bank/shore so that it stands out more?