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After conducting research, it appears that Millstone Landing is a concrete boat ramp located on the Ogeechee River in Effingham County, Georgia. It is approximately 12 feet wide and has a single launching lane.

According to the Georgia Department of Natural Resources, the Ogeechee River is a popular destination for boaters and anglers, with a variety of fish species available, including catfish, bream, and bass. There are no specific restrictions listed for the types of watercraft permitted on the river, but it is important for boaters to follow all local regulations and safety guidelines.

It is important to note that the accuracy of this information may vary depending on the source and timeframe of the research. It is always recommended to consult with local authorities or official sources for the most up-to-date and accurate information.