Koa Hill crossing. For $1 #Koa Hill residents in Honiara can cross the #Mataniko River to reach the main road and access to China Town. Life in #Honiara #solomonislands check out the current water level courtesy of the latest round of El Nino. But don't be deceived by the current, dry weather levels, in the rainy season its a different story. This was the site of flash floods in April 2014, that destroyed houses and killed 22.