Where from your website can I access worldwide vector water body shapefiles that have better resolution than the generic SRTM 90m data?
Do you have coastlines and inland features (lakes, estuaries, reservoirs, and rivers) which are better than SRTM and that the scale is consistent across the entire coastline?
Also, is your data surveyed, generated from an open source mapping team, or is it gathered from other sources such as the USGS, Geoscience Australia, etc?
If your data is gathered and collected, do you have published metadata associated per set?
Best Answer
As PolyGo and Brad noted, StackExchange does not host data itself. For a global dataset of inland waterways, SRTM may be the best source readily available. Have you looked at a description of the data. It is actually quite good resolution considering the extent.
If you are interested in coastlines and will be working at various scales I also recommend checking out the Global Self-consistent, Hierarchical, High-resolution Geography Database, which uses various input data sources.