On Nov. 4, Canyon Lake stood at 96.3% of conservation storage capacity, Comal County’s drought index averaged 461 on a 0–800 scale, and the Edwards J-17 10-day average was 640.4 feet above sea level.
Those figures describe different parts of the region’s water picture. The lake figure measures stored water against conservation capacity; the county index reports drought conditions on its own scale; the J-17 figure is an aquifer-level average. Read each against its stated unit and period, rather than treating the three numbers as one countywide supply figure.
From the source record
The low, average and high describe one county index, not three separate water supplies.
Canyon Lake storage
The Texas Water Development Board’s Canyon Lake reading was 96.3% of conservation storage capacity on Nov. 4. Its percentage has a specific denominator: the reservoir’s conservation storage capacity. Residents checking lake conditions can inspect the dated Canyon Lake reservoir record, which reports the storage measure used here.
County drought index
The Texas A&M Forest Service reported a Comal County drought-index average of 461, with readings ranging from 214 to 596 on the index’s 0–800 scale. Its Nov. 4 release also recorded a two-point daily increase in the county average. The range matters: the average summarizes conditions across the county, while the low and high show that the reported values were not uniform. The dated KBDI record lets readers inspect all three figures together.