At the river bottom there are multiple 160-foot wide grids of electrodes issuing 2.3 volts per inch every 2.5 milliseconds. According to safety reports,

At the river bottom there are multiple 160-foot wide grids of electrodes issuing 2.3 volts per inch every 2.5 milliseconds. According to safety reports, if you swim at almost any point within the range of the electric barriers that span the channel, you risk either involuntary muscle contractions or ventricular fibrillation. I wish the article provided better information about the electrical hazard. A mere 2.3 volts (per inch) doesn't sound hazardous at all, so I'm wondering if immersion in water (distribution over surface area), significantly changes the effects of the electrical field, or is it induced with very high amperage, or is the frequency (2.5 kHz) disruptive? If the surface area of an average human body is ~2 square yards, then the total delivered electrical shock sounds like it's in the 10,000 volt range, which is more readily understandable.