Journal
WATER
Volume 12, Issue 10, Pages -Publisher
MDPI
DOI: 10.3390/w12102913
Keywords
fluvial ecosystems; hydropeaking; InSTHAn tool; short-term flow regimes; subdaily flows; sustainable river management
Categories
Funding
- Spanish Ministry of Science and Innovation (RIHEL) [PID2019-111252RA-I00 CTA]
- Spanish Ministry of Science and Innovation (SECA-SRH) [PID2019-105852RA-I00]
- Universidad Politecnica de Madrid (Programa Propio: Ayudas a Proyectos de I +D de Investigadores Posdoctorales)
- Comunidad deMadrid (Convenio Plurianual con la Universidad Politecnica deMadrid) [APOYO-JOVENES-PHZKKU-148-SSPVMP]
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The computational tool InSTHAn (indicators of short-term hydrological alteration) was developed to summarize data on subdaily stream flows or water levels into manageable, comprehensive and ecologically meaningful metrics, and to qualify and quantify their deviation from unaltered states. The pronunciation of the acronym refers to the recording interval of input data (i.e., instant). We compared InSTHAn with the tool COSH-Tool in a characterization of the subdaily flow variability of the Colorado River downstream from the Glen Canyon dam, and in an evaluation of the effects of the dam on this variability. Both tools captured the hydropeaking caused by a dam operation, but only InSTHAn quantified the alteration of key flow attributes, highlighting significant increases in the range of within-day flow variations and in their rates of change. This information is vital to evaluate the potential ecological consequences of the hydrological alteration, and whether they may be irreversible, making InSTHAn a key tool for river flow management.
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