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src/gradio_app.py

@@ -380,7 +380,7 @@ with gr.Blocks(title="River Network Explorer") as demo:
     with explore_group:
         status_md = gr.Markdown("Loading datasets...")
         plot_output = gr.Plot(label="River Map")
-        slider = gr.Slider(minimum=0, maximum=100, value=50, step=1, label="Position along river (%)")
+        slider = gr.Slider(minimum=0, maximum=100, value=43, step=1, label="Position along river (%)")
         
         with gr.Row():
             metric_elev = gr.Number(label="Elevation (m)")
@@ -422,7 +422,7 @@ with gr.Blocks(title="River Network Explorer") as demo:
                 validation_group: gr.update(visible=False),
                 status_md: "❌ Could not find station_elevations.csv under data root.",
                 plot_output: default_fig,
-                slider: 50,
+                slider: 43,
                 metric_elev: 0.0,
                 metric_dist: "",
                 metric_gw: "No data",
@@ -476,7 +476,7 @@ with gr.Blocks(title="River Network Explorer") as demo:
                 validation_group: gr.update(visible=False),
                 status_md: status_text,
                 plot_output: fig,
-                slider: 50
+                slider: 43
             }
 
     def compute_position(basin_id, percent):