diff --git a/swash/processing/bathy.py b/swash/processing/bathy.py
index 9494bf3..a17a0ef 100644
--- a/swash/processing/bathy.py
+++ b/swash/processing/bathy.py
@@ -15,19 +15,23 @@ except ImportError:
 logging.basicConfig(level="INFO")
 log = logging.getLogger("bathy")
 
+log.info("Starting bathymetry pre-processing")
 config = configparser.ConfigParser()
 config.read("config.ini")
 
 root = pathlib.Path(config.get("data", "root"))
 
+log.info(f"Reading input data from '{root}'")
 bathy_hires = np.loadtxt(root.joinpath(config.get("data", "hires")))
 bathy_lores = np.loadtxt(root.joinpath(config.get("data", "bathy")))
 hstru = np.loadtxt(root.joinpath(config.get("data", "hstru")))
 
+log.info("Generating grid")
 x_hires = np.arange(-0.5 * bathy_hires.size, 0, 0.5)
 x_lores = np.arange(-1 * bathy_lores.size, 0, 1)
 x_hstru = np.arange(-0.5 * hstru.size, 0, 0.5)
 
+log.info("Generating output data")
 bathy_hires_pd = pd.Series(bathy_hires.copy(), index=x_hires)
 bathy_lores_pd = pd.Series(bathy_lores.copy(), index=x_lores)
 
@@ -42,6 +46,7 @@ bathy.hstru = 0
 bathy.loc[x_hstru, "hstru"] = hstru
 
 if config.has_section("out"):
+    log.info("Writing output data")
     out = pathlib.Path(config.get("out", "root"))
     np.savetxt(out.joinpath("bathy.dat"), bathy.z, newline=" ")
     np.savetxt(out.joinpath("hstru.dat"), bathy.hstru, newline=" ")
@@ -51,6 +56,8 @@ if config.getboolean("proc", "plot", fallback=False):
         log.error("Could not import PyPlot")
         sys.exit(1)
 
+    log.info("Plotting data")
+
     fig, ax = plt.subplots()
     ax.plot(x_hires, bathy_hires, label="High-res")
     ax.plot(x_lores, bathy_lores, label="Low-res")
@@ -60,3 +67,5 @@ if config.getboolean("proc", "plot", fallback=False):
     ax.grid()
     ax.legend()
     plt.show(block=True)
+
+log.info("Processing finished")