The four main tributaries are the
Mat, Ta, Po and Ni. These actually form two branches (Mat/Ta and Po/Ni) which are
both shown under the name Mattaponi on the maps before they actually converge into the one river.
Various creeks and runs flow into each of the four main tributaries, as they do into the Mattaponi itself. Below are all the named waters I could find that flow into the Mattaponi itself.
There are many more than 6 tributaries to the Mattaponi. Just south of Guinea, VA,
Meadow Creek joins it (the Po/Ni branch).
Southwest of Bowling Green, VA there is the
South River:
East of the Richmond Turnpike is
Polecat Creek:
One that doesn't qualify:
http://www.bayjournal.com/article/water_board_oks_plan_to_dam_mattaponi_tributary_
This source lists Cahoke Creek as a tributary, saying: "The reservoir plan calls for a 6-mile-long reservoir running diagonally across King William County, drawing up to 75 million gallons a day from
Cahoke Creek, a tributary to the Mattaponi River, most of it going to Newport News 50 miles away. The reservoir would be completed in 2005"
However, that seems to be Cohoke Creek which is a tributary of the Pamunkey... the same Bay Journal corrected the description (but not the spelling of the name) in May 2009 when the reservoir was once again shot down, as follows: " 1993: Newport News, on behalf of the study group, seeks permits from the Corps and the Virginia Department of Environmental Quality for a reservoir on
Cahoke Creek, a tributary of the Pamunkey River. The reservoir would be filled with water pumped from the Mattaponi River"
Edit - Response edited in post # 15.
Hoosier