Getting water right: A case study in water yield modelling based on precipitation data

Pessacg, Natalia Liz; Flaherty, Silvia; Brandizi, Laura; Solman, Silvina Alicia; Pascual, Miguel

doi:10.1016/j.scitotenv.2015.07.148

Cited by 89 publications

(52 citation statements)

References 29 publications

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“…PET and a higher cover or arable land (which has a high Kc). Pessacg et al (2015) found that 436 catchments with a higher cover of LULC classes with a high value of Kc were most sensitive, 437 potentially giving a +150% change in modelled water yield in response to a +30% error in 438 precipitation data, a response very similar to the most sensitive catchments in our results (see Fig. 439 2A).…”

Section: Model Validation and Comparison Of Climatic Datasets 292supporting

confidence: 52%

Empirical validation of the InVEST water yield ecosystem service model at a national scale

Redhead

Stratford

Sharps

et al. 2016

Science of The Total Environment

288

122

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21A variety of tools have emerged with the goal of mapping the current delivery of ecosystem services 22 and quantifying the impact of environmental changes. An important and often overlooked question 23 is how accurate the outputs of these models are in relation to empirical observations. In this paper 24 we validate a hydrological ecosystem service model (InVEST Water Yield Model) using widely 25 available data. We modelled annual water yield in 22 UK catchments with widely varying land cover, 26 population and geology, and compared model outputs with gauged river flow data from the UK 27 National River Flow Archive. Values for input parameters were selected from existing literature to 28 reflect conditions in the UK and were subjected to sensitivity analyses. We also compared model 29 performance between precipitation and potential evapotranspiration data sourced from global-and 30 UK-scale datasets. We then tested the transferability of the results within the UK by additional 31 validation in a further 20 catchments. 32Whilst the model performed only moderately with global-scale data (linear regression of modelled 33 total water yield against empirical data; slope = 0.763, intercept = 54.45, R 2 = 0.963) with wide 34 variation in performance between catchments, the model performed much better when using UK-35 scale input data, with closer fit to the observed data (slope = 1.07, intercept = 3.07, R 2 = 0.990). With 36 UK data the majority of catchments showed less than 10% difference between measured and 37 modelled water yield but there was a minor but consistent overestimate per hectare (86 38 m 3 /ha/year). Additional validation on a further 20 UK catchments was similarly robust, indicating 39 that these results are transferable within the UK. These results suggest that relatively simple 40 models can give accurate measures of ecosystem services. However, the choice of input data is 41 critical and there is a need for further validation in other parts of the world. 42Keywords 43 UK, mapping, rainfall, evapotranspiration, river flow, land cover 44 45

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Section: Model Validation and Comparison Of Climatic Datasets 292supporting

confidence: 52%

Empirical validation of the InVEST water yield ecosystem service model at a national scale

Redhead

Stratford

Sharps

et al. 2016

Science of The Total Environment

288

122

View full text Add to dashboard Cite

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“…According to NBI [19], the Nile is 6695 km long and drains over 3,176.541 km 2 , which makes it the longest river on the planet earth and covers almost 10% of the African mainland. The Nile River flows through 11 countries of northeast Africa including Ethiopia, Tanzania, Sudan, Egypt, Kenya and has 10 sub-basins (see Figure 1).…”

Section: Study Area Descriptionmentioning

confidence: 99%

“…Ecosystems also regulate the environment we live in through water and nutrient cycles, protect us from natural hazards like soil erosion and tsunamis; and they have spiritual and recreational values, but these benefits we get from ecosystems are simply overlooked. Recently, ecosystem services modeling is centered on water because fresh water is indispensable for food production, industrialization, domestic use, hydropower, fisheries, recreation and the entire natural functioning of ecosystems [2]. However, fresh water production is affected by population growth, land use, land cover change and climate change.…”

Section: Introductionmentioning

confidence: 99%

A New Approach to Modeling Water Balance in Nile River Basin, Africa

et al. 2018

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Abstract:The demand for calculating and mapping water yield is increasing for inaccessible locations or areas of conflict to support decision makers. Integrated Valuation of Environmental Services and Tradeoffs (InVEST) was applied to simulate basin hydrology. InVEST is becoming popular in the water modeling community due to its low requirements for input information, level of skill and model setup is available to the public domain. Estimation and mapping of water production, evapotranspiration and precipitation of the Nile River Basin have been performed by using open access data. This study utilized climate, soil and land use related data to model the key components of the water balance in the study region. Maps of the key parts of water balance were also produced. The spatial patterns of precipitation, actual evapotranspiration and water yield show sharp decline from south to northern part of the study basin while actual evapotranspiration fraction happens to the opposite. Our analysis confirms the ability of the InVEST water yield model to estimate water production capacity of a different part of a basin without flow meters.

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“…Hamel dan Guswa (2015) menyimpulkan bahwa model hasil air InVEST dapat merepresentasikan dengan baik sebaran spasial hasil air pada masing-masing kelas penutupan/penggunaan lahan. Namun demikian, kualitas hasil air dari model InVEST sangat dipengaruhi oleh data input (Hamel et al, 2015;Redhead et al, 2016), terutama curah hujan Hamel et al, 2015;Pessacg et al, 2015). Hasil validasi yang dilakukan oleh Redhead et al (2016) menunjukkan bahwa hasil air model InVEST mempunyai korelasi tinggi dengan hasil observasi berdasarkan data aliran sungai, terutama ketika menggunakan data lokal.…”

Section: Hasil Air DI Dta Danau Rawa Peningunclassified

“…Namun demikian, pengaruhnya tidak sebesar curah hujan Hamel et al, 2015;Pessacg et al, 2015). Penutupan lahan berfungsi memodifikasi evapotranspirasi acuan dalam perhitungan hasil air (Sharp et al, 2015).…”

Section: Hasil Air DI Dta Danau Rawa Peningunclassified

Estimasi Hasil Air Dari Daerah Tangkapan Air Danau Rawa Pening Dengan Menggunakan Model Invest

Nugroho

2017

MIG

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ABSTRAKInformasi hasil air dari suatu ekosistem sangat penting dalam pengelolaan sumber daya air. Dalam perencanaan kegiatan konservasi sumber daya air, informasi sebaran spasial hasil air diperlukan untuk menentukan prioritas wilayah terkait dengan alokasi anggaran. Hasil air dari suatu ekosistem atau daerah aliran sungai (DAS) dapat diestimasi dengan menggunakan model hidrologi. Penelitian ini bertujuan untuk mendapatkan informasi tentang hasil air, baik besaran maupun sebaran spasialnya, dari daerah tangkapan air ( /ha. Wilayah hulu dan tengah Sub DAS Sraten secara umum mempunyai hasil air yang lebih tinggi, sedangkan wilayah danau dan sekitarnya serta hulu Sub DAS Galeh mempunyai hasil air yang lebih rendah dibandingkan dengan wilayah lainnya. Wilayah dengan hasil air tinggi dapat diprioritaskan dalam kegiatan konservasi sumber daya air untuk mendukung pasokan air ke Danau Rawa Pening. Kata kunci: hasil air, daerah tangkapan air, model InVEST, Danau Rawa Pening ABSTRACT Accurate information on water yield from an ecosystem is very important in the management of water resources. In the planning of water resources conservation activities, the information on the spatial distribution of water yield is needed to determine regional priorities related to budget allocations

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Getting water right: A case study in water yield modelling based on precipitation data

Cited by 89 publications

References 29 publications

Empirical validation of the InVEST water yield ecosystem service model at a national scale

Empirical validation of the InVEST water yield ecosystem service model at a national scale

A New Approach to Modeling Water Balance in Nile River Basin, Africa

Estimasi Hasil Air Dari Daerah Tangkapan Air Danau Rawa Pening Dengan Menggunakan Model Invest

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