Monitor Wells Page ContentData Collection The 1 1/4-inch monitoring wells are manually read once a month during the dry season (October to May) and twice a month during the wet season (June to September). The data is entered into an Excel worksheet on the County's server. The 4-inch monitoring wells that are on telemetry record the water level hourly and are downloaded monthly. Quality assurance and quality control is performed and then entered into an Excel worksheet on the County's server. View Monitor Well Data Quick Links More ››