diff --git a/src/specificClass.js b/src/specificClass.js
index 6c58a7b..0185c60 100644
--- a/src/specificClass.js
+++ b/src/specificClass.js
@@ -205,11 +205,36 @@ class DashboardApi {
     const yFor = (v) => +(TANK_BOT - (v / heightBasin) * TANK_H).toFixed(2);
     const tyFor = (yLine) => +(yLine - 8).toFixed(2); // centre 16px text on the line
 
-    const y_overflow    = yFor(overflowLevel);
-    const y_highSafety  = yFor(highSafetyLevel);
-    const y_inflow      = yFor(inflowLevel);
-    const y_dryRun      = yFor(dryRunLevel);
-    const y_outflow     = yFor(outflowLevel);
+    let y_overflow    = yFor(overflowLevel);
+    let y_highSafety  = yFor(highSafetyLevel);
+    let y_inflow      = yFor(inflowLevel);
+    let y_dryRun      = yFor(dryRunLevel);
+    let y_outflow     = yFor(outflowLevel);
+
+    // Enforce a minimum visual gap between adjacent threshold lines so labels
+    // can always sit cleanly between them — independent of how close the
+    // underlying physical thresholds are. Slight geometric distortion is
+    // acceptable: the tank visual conveys ORDERING and ZONE STRUCTURE, not
+    // exact-scale level measurement. Dashed/value labels carry the true
+    // numeric values.
+    const MIN_LINE_GAP = 28; // px (≈3.7% of 760-tall frame, > LABEL_H + 2)
+    const sorted = [
+      { id: 'overflow',   get: () => y_overflow,   set: (v) => (y_overflow   = v) },
+      { id: 'highSafety', get: () => y_highSafety, set: (v) => (y_highSafety = v) },
+      { id: 'inflow',     get: () => y_inflow,     set: (v) => (y_inflow     = v) },
+      { id: 'dryRun',     get: () => y_dryRun,     set: (v) => (y_dryRun     = v) },
+      { id: 'outflow',    get: () => y_outflow,    set: (v) => (y_outflow    = v) },
+    ].sort((a, b) => a.get() - b.get());
+    // Push down to enforce min gap (anchor: topmost line)
+    for (let i = 1; i < sorted.length; i++) {
+      const minY = sorted[i - 1].get() + MIN_LINE_GAP;
+      if (sorted[i].get() < minY) sorted[i].set(minY);
+    }
+    // If the last (lowest) line went past the floor, shift the whole stack up.
+    const overshoot = sorted[sorted.length - 1].get() - TANK_BOT;
+    if (overshoot > 0) {
+      for (const item of sorted) item.set(item.get() - overshoot);
+    }
 
     // Label y-positions: labels sit either ABOVE or BELOW their threshold
     // line, never on it. Each label is offset by ABOVE_OFFSET=22 px above