Inland River Market Note — Week of June 27, 2026
Rate pressure eases a notch off the Illinois-system highs; Marseilles stays the chokepoint; corn export demand holds firm.
Rate pressure is easing at the margin. The system-average modeled rate slipped to $13.46/ton (from $13.76, about −2% week-on-week) and the average pressure index fell 40.2 → 36.1 — an elevated-but-cooling market, not a break.
The Illinois system stays the tightest corridor, Marseilles is the binding chokepoint, and corn is the demand engine. The forward read is withheld this week: the forward leg's newest snapshot is 25 days old, past the freshness line.
| Segment (Illinois system) | $/ton | Change vs. last week | Pressure idx |
|---|---|---|---|
| Chicago | $20.94 | ↓ $0.39 | 37 (was 40) |
| Lockport–Lemont | $19.23 | ↓ $0.36 | 37 (was 40) |
| Seneca–Joliet | $18.98 | ↓ $0.35 | 37 (was 40) |
Navigation & river conditions
Lock friction is concentrated at Marseilles on the Illinois River. The most recent reading is June 26: 14 tows, 13.2 hr average wait — the queue building even as the per-tow wait came down from 18.4 hr (June 21) earlier in the week. 20 of 20 reviewed lock-days in the window are flagged as constraints.
The 10-day forecast points the low-water watch at three upper-basin gauges with the lowest forward flows: USGS 05331000 (10.4 kcfs / 3.5 ft stage), 05420500 (52.2 kcfs / 9.3 ft), and 06893000 (62.7 kcfs / 13.7 ft).
| Commodity | Weekly exports | Outstanding |
|---|---|---|
| Corn | 5.5 MMT | 55.1 MMT |
| All grains | 12.2 MMT | — |
Bottom line — what to watch into next week
- Next week Marseilles remains the throughput bottleneck 14 tows / 13.2 hr wait, 20 of 20 lock-days flagged
- 10-day Draft risk builds on the three listed upper-basin gauges Lowest forward flows in the forecast set
- Rate feed A re-tightening signal needs a fresh forward snapshot Forward leg 25 days stale; directional only