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Open AccessArticle

Evaluating Evaporation Methods for Estimating Small Reservoir Water Surface Evaporation in the Brazilian Savannah

1
Department of Agricultural Engineering, Federal University of Viçosa (UFV), Avenue Peter Henry Rolfs, Viçosa 36570-900, MG, Brazil
2
Brazilian Agricultural Research Corporation (EMBRAPA—Cerrados), Planaltina 73310-970, DF, Brazil
*
Author to whom correspondence should be addressed.
Water 2019, 11(9), 1942; https://doi.org/10.3390/w11091942
Received: 5 August 2019 / Revised: 12 September 2019 / Accepted: 16 September 2019 / Published: 18 September 2019
(This article belongs to the Section Water Use and Scarcity)
Small reservoirs play a key role in the Brazilian savannah (Cerrado), making irrigation feasible and contributing to the economic development and social well-being of the population. A lack of information on factors, such as evaporative water loss, has an impact on the design and management of these reservoirs, as well as on regional water safety. Acquiring this information is crucial for hydrologists to develop more effective water resource management strategies and policies. This study assesses the performance of a diverse number of methods that are used to estimate evaporation and provides evaporation probability curves on a fortnightly period for small reservoirs in the Brazilian savannah region. Evaporation data were collected for a small water reservoir located in the Buriti Vermelho watershed, a typical dam of the Brazilian savannah region. Among the assessed methods, those of Kohler et al. (1955) and Linacre (1993) presented the best performances on both the daily and monthly scales for evaporation estimates. By simulating the evaporation rates for a timeseries, an increasing trend in evaporation was observed for the transition between the dry and wet seasons, jeopardizing double cropping in the region. The developed probability curves are an important tool for improving water resource planning and increasing the local water availability. View Full-Text
Keywords: frequency curves; small dams; climate change; water resource management frequency curves; small dams; climate change; water resource management
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MDPI and ACS Style

Althoff, D.; Rodrigues, L.N.; da Silva, D.D. Evaluating Evaporation Methods for Estimating Small Reservoir Water Surface Evaporation in the Brazilian Savannah. Water 2019, 11, 1942. https://doi.org/10.3390/w11091942

AMA Style

Althoff D, Rodrigues LN, da Silva DD. Evaluating Evaporation Methods for Estimating Small Reservoir Water Surface Evaporation in the Brazilian Savannah. Water. 2019; 11(9):1942. https://doi.org/10.3390/w11091942

Chicago/Turabian Style

Althoff, Daniel; Rodrigues, Lineu N.; da Silva, Demetrius D. 2019. "Evaluating Evaporation Methods for Estimating Small Reservoir Water Surface Evaporation in the Brazilian Savannah" Water 11, no. 9: 1942. https://doi.org/10.3390/w11091942

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