Lows were in the 50's to 20's in the Upper Basin and in the 60's to 30's in Orange. Some parameters were influenced by a 0.35-0.62 inch rainfall at Toledo Bend and the Upper Basin one day prior to the sample run. Temperature and dissolved oxygen profiles indicate the reservoirs are not thermally stratified and will continue to mix until extended periods of warm weather. For the February sample run, most of the parameter's values seen at the Upper Basin sites were consistent with water of high quality. Bacteriological counts were high at most river sites, not unusual after a significant rain.
Streptococcal counts indicate sources are likely non-human.
Lake Fork and Lake Tawakoni reservoirs were completely mixed. Stream standards do not exist for nitrogen and phosphorus compounds so statewide screening criteria are used for comparison. Including Toledo Bend to Morgan Bluff February WQM sampling results were indicative of water of high quality at most sites. Toledo Bend Reservoir levels were near pool level at the time samples were taken. Deep-water stations sampled on the reservoir were well mixed and did exhibit weak thermal stratification.