One of our specialties at Balance Hydrologics is collecting and using direct field measurements when needed as a foundation for project analysis and decision making. A hallmark of our work has been the ability to measure (or "gage") the movement of water, sediment, and water-quality constituents in streams, lakes, ground-water basins and tidal systems, under a wide range of conditions. We have a recognized track record in collecting and processing data from our field monitoring efforts in an effective manner which conforms to federal and state agency norms and adopt them for specialized settings such as vernal pools or karst and headwater channels. These norms include standards of the Federal Interagency Sedimentation Program, which governs USGS, California DWR, USFS, and Army Corps of Engineers studies
Collecting reliable gaging records calls for an understanding of the continuous, and often unpredictable nature of hydrologic processes. Balance Hydrologics staff have traditionally been able to deploy storm monitoring teams and make appropriate observations and measurements necessary to validate the gaging record.
To better meet the specialized requirements of each gaging program, Balance Hydrologics owns a versatile array of surface and ground water monitoring equipment, and our staff are familiar with an assortment of client-owned field equipment. Examples include a range of dataloggers, discharge meters, sediment-sampling equipment and specialized probes used for measuring conditions of seeps and springs, streams, lakes, aquifers and sloughs, during all types of climatic conditions. Solar panel and battery arrays allow for installations in remote areas and demanding environments, and telemetry can give clients access to "real-time" data. Staff hydrologists are able to provide clients with basic data or interpretations, processed for input into their data management and/or GIS systems.
Sample Station at Gazos Creek (for aquatic biologists)
Rainfall at Balance's office in Berkeley
Trubidity, specific conductance, dissolved oxygen and pH
Mean daily flows
Annual hydrologic records
Extremes and exceedance analysis
Changes in peak and low flows over time ('hydromodification')
Suspended and bedload sediment
Sediment rating curves
Annual loads
Depth-integrated sampling
Automated samplers (ISCO, Sigma)
Stream temperature and specific conductance (an index of salinity)
Isotope analysis and tracing
Microbial source tracking (MST) and general pathogen sampling
Sediment-source inventory
Stream-bed conditions
Effects of riparian vegitation on inundation levels
Large wood and wood jams
Surface and ground water interaction
Recharge and infiltration testing
Well yield testing and aquifer characterization
Multi-piezometer monitoring
Infiltration tests
Seep and spring continuity
measuring compliance with mandated flows and water levels
Detention basins
Water-quality ponds
Wetland habitat conditions
Tidal wetland restoration