diff --git a/README.md b/README.md
index bbf4337..085acaf 100644
--- a/README.md
+++ b/README.md
@@ -26,7 +26,7 @@ Configuration:
 ```
 [inp]
 root: input directory
-base: bathymetry database (.xyz)
+base: bathymetry database (.xyz) -- not provided in this repository
 hires: 1d hires smoothed breakwater profile (.dat)
 hstru: 1d hires smoothed breakwater porosity height (.dat)
 poro: 1d breakwater porosity (.dat)