--- a/pkg/imports/sr.go	Tue Oct 08 10:37:02 2019 +0200
+++ b/pkg/imports/sr.go	Tue Oct 08 12:10:55 2019 +0200
@@ -97,10 +97,7 @@
 
 func (srJobCreator) Depends() [2][]string {
 	return [2][]string{
-		{"sounding_results",
-			"sounding_results_contour_lines",
-			"sounding_results_iso_areas",
-		},
+		{"sounding_results", "sounding_results_iso_areas"},
 		{"bottlenecks"},
 	}
 }
@@ -164,32 +161,6 @@
   ST_AsBinary(ST_Buffer(ST_MakeValid(ST_GeomFromWKB($1, $2::integer)), 0.0)),
   ST_AsBinary(ST_Buffer(ST_MakeValid(ST_GeomFromWKB($1, $2::integer)), 0.1))`
 
-	insertContourSQL = `
-INSERT INTO waterway.sounding_results_contour_lines (
-  sounding_result_id,
-  height,
-  lines
-)
-SELECT
-  $1,
-  $2,
-  ST_Transform(
-    ST_Multi(
-      ST_CollectionExtract(
-        ST_SimplifyPreserveTopology(
-          ST_Multi(ST_Collectionextract(
-            ST_MakeValid(ST_GeomFromWKB($4, $3::integer)), 2)),
-          $5
-        ),
-        2
-      )
-    ),
-    4326
-  )
-FROM waterway.sounding_results sr
-WHERE id = $1
-`
-
 	insertIsoAreasSQL = `
 INSERT INTO waterway.sounding_results_iso_areas (
   sounding_result_id,
@@ -900,10 +871,6 @@
 
 	heights = common.DedupFloat64s(heights)
 
-	if err := generateContours(ctx, tx, feedback, tree, heights, id); err != nil {
-		return err
-	}
-
 	return generateIsoAreas(ctx, tx, feedback, tree, heights, id)
 }
 
@@ -967,37 +934,3 @@
 
 	return nil
 }
-
-func generateContours(
-	ctx context.Context,
-	tx *sql.Tx,
-	feedback Feedback,
-	tree *octree.Tree,
-	heights []float64,
-	id int64,
-) error {
-	feedback.Info("Generate contour lines")
-	start := time.Now()
-	defer func() {
-		feedback.Info("Generating contour lines took %v",
-			time.Since(start))
-	}()
-
-	stmt, err := tx.PrepareContext(ctx, insertContourSQL)
-	if err != nil {
-		return err
-	}
-	defer stmt.Close()
-
-	octree.DoContours(tree, heights, func(res *octree.ContourResult) {
-		if err == nil && len(res.Lines) > 0 {
-			_, err = stmt.ExecContext(
-				ctx,
-				id, res.Height, tree.EPSG,
-				res.Lines.AsWKB2D(),
-				contourTolerance)
-		}
-	})
-
-	return err
-}