Overview Group Overview Water Level Loggers, Level Meters & Monitoring Systems In-Situ offers a variety of accurate, reliable water level loggers and meters for any project or budget. Whether you need long-term monitoring or instant results, our easy-to-use water level loggers are built to last, saving you time and money in the field. Level & Temperature Data Loggers Gather and monitor water level data for years without having to replace batteries or equipment. In-Situ water level loggers are accurate, cost-effective, and survive in extreme conditions. Professional and Premium models are available in vented and non-vented configurations. CTD Loggers In-Situ’s reliable CTD water level loggers are designed for long-term autonomous deployments in the harshest environments. Our sensors provide accurate data you can trust, with durable construction that reduces your time in the field. Water Level Meters Durable, easy-to-read level meters in various lengths.