Great River by JCCST
Cities: Skylines map including:
✔ A great river with enough flow strength
✔ Some hills with ore
✔ A forest with enough density for some good forestry industry
✔ Flat fertile land
✔ Flat land with oil
✔ Enough flat land to build a massive city
✔ Opportunities for tourism and international trade
✔ 2 Highway connections with pre-built intersections
✔ 2 Railway connections
✔ Railway along coast and all natural resources
I strongly recommend using this map with the "unlock 25 tiles" mod.
