Suitability Analysis of Reservoir’s Location using GIS Based SPI Index (Case Study: Bodri Kuto Watershed)

Harjanti, Theresia Novie Secunda; Suharyanto, Suharyanto; Sriyana,

doi:10.1051/matecconf/201928001007

Cited by 2 publications

(4 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Recently, Theresia et al [5] used SPI to evaluate the correlation between drought area and the location of small reservoir construction in the Bodri-Kuto river basin In Indonesia. They reported the low suitability of the locations of small reservoirs given the drought conditions.…”

Section: Discussionmentioning

confidence: 99%

“…They reported the low suitability of the locations of small reservoirs given the drought conditions. However, Theresia et al [5] used SPI defined as the standardized deviation from its respective month [5]. This use of SPI only indicates each month's deviation, resulting in different dry spell definitions in different months despite having equal SPI values.…”

Section: Discussionmentioning

confidence: 99%

“…The larger the negative value, the larger the deviation (smaller than) from its average or reference value, indicating a more severe drought index. The SPI formula is as follows [5,16,17]:…”

Section: Discussionmentioning

confidence: 99%

“…A study of the location suitability of small reservoirs in the Bodri-Kuto river basin indicated their low suitability [5]. However, the authors used the average of each month's rainfall data as reference for its respective month's standardized precipitation index (SPI) calculation.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Location Suitability for Small Reservoirs at the Bodri-Kuto River Basin Based on Spatial Monthly SPI

Suharyanto

Harjanti²,

Sriyana

et al. 2020

Water

Self Cite

View full text Add to dashboard Cite

Despite efforts to develop and conserve water resources, almost every year during the dry season, some areas in Central Java province in Indonesia still experience a lack of water, especially in rural villages. These areas require water supply via water trucks and/or portable pumps to obtain water from rivers and groundwater. The Central Java government committed to implementing a program involving the construction of 1000 small reservoirs by 2020 to overcome water shortages. However, the technically ideal sites are mostly privately owned, which requires lengthy and costly land acquisition. To avoid the uncertainty of land acquisition, some small reservoirs were placed on state-owned land, which did not require land acquisition. The consideration of putting more emphasis on state-owned land rather than technically ideal sites for the construction of small reservoirs raise the issue on the location suitability of those reservoirs. In this study, we evaluated the suitability of the location of small reservoirs in the Bodri-Kuto river basin using the monthly standardized precipitation index (SPI). We used rainfall records of 25 stations in the river basin from 2000 to 2016 and analyzed yearly and monthly rainfall data. The yearly analysis shows that the dry conditions (SPI < −0.5) from 2005 to 2009 affected more than half of the rainfall stations (>50%), whereas the rainfall stations that experienced more dry years included Kedung Wungu, Babadan, Bojong, Ketapang, Sekopek, and Podowaras (more than 9 out of 17 years). The monthly SPI shows that during July, August, and September, all the rainfall stations experience moderately dry or worse conditions (SPI < −0.50). Using 25 rainfall stations, we determined the spatial spread of dry conditions using monthly SPI values from July, August, and September. Overlay of the spatial spread of dry conditions with the location of small reservoirs can be used to evaluate the suitability of small reservoir locations. We found that 1 (3%) location is very suitable, 7 (21%) locations are suitable, 24 (73%) locations are moderately suitable, and 1 (3%) location is less suitable. The findings indicate that the spatial distribution of SPI can be used as an additional criterion for evaluating the suitability of small reservoirs’ locations should technically ideal locations be unavailable.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations