Hello. Thanks for mapping.
Please check your knowledge how to tag waterways.  You tagged this as a canal !
This is a natural area where rivers and streams are flowing.
Also, the highways you mapped are incorrect tagged 
Check your knowledge about tagging of highways
You tag small paths as a connecting highway
Check these webpages
https://wiki.openstreetmap.org/wiki/Highway_Tag_Africa
This is about Tanzania but also valid here
https://drive.google.com/file/d/1SxLkCU3IRecsFV2kYx61VImJLLtQiKw3/view?pli=1
And, where waterways crosses highways, add a node and tag it as a ford. bridge or culvert.
Best regards

