What is considered an open body of water under the regulations?

• A. Rivers, streams, lakes, and public irrigation ditches, excluding roadside ditches and small ponds.
• B. Only rivers and lakes.
• C. Only streams and canals.
• D. Any water body including roadside ditches.

Answer: (A)

Open body of water refers to surface waters that are exposed to the environment and can be affected by pesticide drift or runoff. In the regulations, this includes rivers, streams, lakes, and public irrigation ditches that carry water for agricultural use. Roadside ditches and small ponds are not considered open bodies of water for this purpose, which is why they’re excluded. This distinction matters because buffer requirements and protective measures apply to these open water features to help prevent pesticide contamination of aquatic ecosystems.