# Too much rain: China's floods roil hydropower, corn supplies

> Flooding on the Yangtze River slowed barges carrying grain from northern ports to southern China. Spot corn prices at major Yangtze ports rose 30 yuan to 1,800 yuan a tonne in a week. Floods also disrupted hydropower generation.

- Date: 2017-07-04 · published 2017-07-04T12:00:00.000Z
- Category: weather · region China · magnitude medium
- Page: https://feedsoft.ai/events/69844-too-much-rain-china-s-floods-roil-hydropower-corn-supplies
- Commodities: [Corn](https://feedsoft.ai/c/CORN.md), [Barge Freight (St. Louis)](https://feedsoft.ai/c/BARGE.md)

## Why it matters

Barge delays raise freight costs and tighten corn supply in central and southern China, supporting domestic corn prices and possibly increasing import demand. The effect on world prices depends on how long the disruption lasts.

## Read by commodity

- CORN: bullish ▲
- BARGE: bullish ▲

## Similar past events

| Commodity | Date | Event | 5-day % | 20-day % |
| --- | --- | --- | --- | --- |
| CORN | 2023-08-11 | [China floods hit rice, corn crops; trigger food inflation worries \| Reuters](https://feedsoft.ai/events/34584-china-floods-hit-rice-corn-crops-trigger-food-inflation-worries-reuters.md) | -1.6% | -2.3% |
| CORN | 2021-06-09 | [Recent Rains Came Too Late for Much of Brazil’s Safrinha Corn - UkrAgroConsult](https://feedsoft.ai/events/46414-recent-rains-came-too-late-for-much-of-brazil-s-safrinha-corn-ukragroconsult.md) | -1.4% | -1.4% |
| CORN | 2026-08-27 | [Heat, floods threaten China crops as U.S. farm purchases loom \| Reuters](https://feedsoft.ai/events/14552-heat-floods-threaten-china-crops-as-u-s-farm-purchases-loom-reuters.md) | +1.2% | +5.8% |
| CORN | 2020-08-25 | [U.S. grains: Crop concerns, Chinese buying spark rallies in soy, corn - Grainews](https://feedsoft.ai/events/51652-u-s-grains-crop-concerns-chinese-buying-spark-rallies-in-soy-corn-grainews.md) | +3.0% | +8.9% |
| CORN | 2018-03-15 | [Importers buy U.S. corn at record rate as drought tightens LatAm supplies](https://feedsoft.ai/events/11425-importers-buy-u-s-corn-at-record-rate-as-drought-tightens-latam-supplies.md) | -1.7% | +2.8% |

## Sources

- reuters.com: https://www.reuters.com/article/world/too-much-rain-chinas-floods-roil-hydropower-corn-supplies-idUSKBN19P09E/

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Data from Feedsoft AI (https://feedsoft.ai/). For information only; not investment advice.