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Message: <blockquote data-quote="Greenfield" data-source="post: 5593582" data-attributes="member: 6669384">Climate wise, it looks like you're describing Southern California.  Coastal plains, mountains nearby, and desert.Port of Long Beach to the foothills of Monrovia is 35-40 miles, which is one to two days of travel in D&D terms.  Beyond those mountains is a few hundred miles of the high desert on the way to Las Vegas.Limited natural water and a fairly bland coastline means that you'll have cities where there are rivers and/or natural harbors, and those will be few and far between.Major construction could be used to bring in water, as the Romans did with their aquaduct network, but of something damaged that network it could cause major problems for the city.  That's one of the reasons Rome fell so quickly when a barbarian horde managed to actually reach the city walls,  They just knocked down a few aquaduct channels and cut off the city's water supply.  Rome capitulated in a matter of days, where a typical walled city of the era could hold out for months.Large scale problems with the water supply could cause a city's population to shrink, leaving large sections abandoned.  They'd be reduced to a population the immediate water supply could support.Yes, yes, I know about Create Water and Decanters' of Endless Water.  Rome didn't have those, and if the item isn't available it will quickly become apparent that dependence on the spell isn't a long term solution.</blockquote>

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