Main deliverables:
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Complete report accompanied by a database with consistent series;
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Georeferenced maps of the network;
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Data availability dashboard;
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Corrective action plan to improve the monitoring network.
These products strengthen regulatory compliance, increase reliability for dam generation and safety studies, reduce operating costs, and increase transparency for regulatory agencies, investors, and society. Most importantly, they fully comply with ANA/ANEEL Joint Resolution No. 127/2022 , avoiding fines and regulatory liabilities.
Rhama Analysis's unique strengths lie in its holistic ability to investigate the causes of inconsistencies by linking warning signs to problematic behaviors at stations, such as measurement errors; regional analysis to determine consistent behaviors between stations; and operational data analysis, including assessments of hydroelectric power plant structures and their water balances using inflow/outflow data; as well as automated database filling with validation (optimizing deliveries).
This study follows the ANA Guidelines (2012 and 2016) for consistency of fluviometric/rainfall data and for preparing the annual report, using software such as HIDRO 1.4 and SIADH.
The study details the following analyses:
Station inspection and calibration schedule;
Assessment of monthly data availability;
Verification of key curves (elevation × flow) and, when necessary, proposal of new adjustments;
It applies consistency techniques such as Cumulative Time Curve (CAT), Double-Cumulative Curve (CDA) and regional regressions to validate historical and telemetric series.
Joint ANA/ANEEL Resolution No. 127/2022 establishes procedures for hydroelectric projects with capacity > 1 MW to install, operate, and maintain hydrological stations, as well as submit an Annual Operation and Data Consistency Report. The objective is to expand and improve the national inventory of rainfall, fluviometric, limnimetric, sedimentometric, and water quality data, in addition to supporting the monitoring of reservoir siltation.