A weekend rainfall that hit Lamesa three weeks ago is to blame for the deaths of fish in the local Boys and Girls Club Lake, according to a report from the Texas Parks and Wildlife Department (TPWD). The rain resulted in lower levels of dissolved oxygen levels in the water, according to Travis Tidwell, a TPWD fish biologist.Lakes and ponds have stratification, or a separation of two different water temperatures. The warmer upper layer contain more oxygen than the bottom colder water level.Hot weather conditions affect water temperatures.When a heavy rain falls, the water churns and water temperatures mix. That ...