Assessment of the impact of groundwater pumpage on water supply sustainability in Zanzibar, Tanzania
In the present study, a 42-year record of rainfall and temperature from Airport and a 43-year rainfall record from Kizimbani meteorological station were analyzed to understand how these climatic variables are affecting groundwater supply on the Island of Zanzibar, Tanzania. Water table fluctuation (...
Gespeichert in:
| Veröffentlicht in: | Environmental earth sciences 2020-11, Vol.79 (21), Article 490 |
|---|---|
| Hauptverfasser: | , |
| Format: | Artikel |
| Sprache: | eng |
| Schlagworte: | |
| Online-Zugang: | Volltext |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| container_end_page | |
|---|---|
| container_issue | 21 |
| container_start_page | |
| container_title | Environmental earth sciences |
| container_volume | 79 |
| creator | Ali, Zuleikha P. Rwiza, Mwemezi J. |
| description | In the present study, a 42-year record of rainfall and temperature from Airport and a 43-year rainfall record from Kizimbani meteorological station were analyzed to understand how these climatic variables are affecting groundwater supply on the Island of Zanzibar, Tanzania. Water table fluctuation (WTF) and rainfall data were examined for estimating groundwater recharge. The abstraction volume and recharge rate were used to estimate the water balance. Also, the different physicochemical parameters, such as chlorinity, nitrate, electrical conductivity (EC) and total dissolved solids (TDS) were examined to assess the impact of groundwater pumpage on water quality on the island of Zanzibar. Through the use of WTF method, the present study estimated the recharge rates, local sustainable yield (SY) and integrated water balance (IWB). Rainfall records showed that Zanzibar Island receives a total mean annual rainfall of 1673 mm out of which 7% (equivalent to 1.79 × 10
6
m
3
/y) recharges the groundwater. Temperature variations indicated an incremental trend accompanied by low rainfall. The average estimated SY was 0.72%, while the IWB showed a deficit of 39%. Furthermore, the total groundwater abstraction rate in the studied area was 2.49 × 10
6
m
3
/y, which was higher than the rate of recharge. This means that the groundwater resources are currently over-exploited and, if immediate action is not taken, the groundwater aquifers may be subjected to pollution, collapse and seawater intrusion. The effects of over-pumping were manifested by high levels of EC, chloride, TDS, total hardness and nitrate that showed an increasing trend with time. |
| doi_str_mv | 10.1007/s12665-020-09240-8 |
| format | Article |
| fullrecord | <record><control><sourceid>proquest_cross</sourceid><recordid>TN_cdi_proquest_journals_2471468363</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>2471468363</sourcerecordid><originalsourceid>FETCH-LOGICAL-a342t-f80a6605addb28b2ffd14fba71af9b6cb9d749ae64ffacae1fd138040fd1b2a3</originalsourceid><addsrcrecordid>eNp9UE1LAzEUDKJgqf0DngJeXc1Xs9ljKWqFgpeevISX3aSmtNk12UXqrzd2RW--y7yPmXkwCF1TckcJKe8TZVLOC8JIQSomSKHO0IQqKQvJqur8t1fkEs1S2pFcnPKKyAlqFinZlA429Lh1uH-z2B86qE_TNrZDaD6gtxF3Q15vLW4DHhdp6Lr9MUPqwQcwfu_7I_YBv0L49AbiLd7kDoKHK3ThYJ_s7AenaPP4sFmuivXL0_NysS6AC9YXThGQksyhaQxThjnXUOEMlBRcZWRtqqYUFVgpnIMaLM13roggGQ0DPkU3o20X2_fBpl7v2iGG_FEzUVIhFZc8s9jIqmObUrROd9EfIB41Jfo7Tz3mqXOe-pSnVlnER1HK5LC18c_6H9UXWRF6_g</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>2471468363</pqid></control><display><type>article</type><title>Assessment of the impact of groundwater pumpage on water supply sustainability in Zanzibar, Tanzania</title><source>Springer Nature</source><creator>Ali, Zuleikha P. ; Rwiza, Mwemezi J.</creator><creatorcontrib>Ali, Zuleikha P. ; Rwiza, Mwemezi J.</creatorcontrib><description>In the present study, a 42-year record of rainfall and temperature from Airport and a 43-year rainfall record from Kizimbani meteorological station were analyzed to understand how these climatic variables are affecting groundwater supply on the Island of Zanzibar, Tanzania. Water table fluctuation (WTF) and rainfall data were examined for estimating groundwater recharge. The abstraction volume and recharge rate were used to estimate the water balance. Also, the different physicochemical parameters, such as chlorinity, nitrate, electrical conductivity (EC) and total dissolved solids (TDS) were examined to assess the impact of groundwater pumpage on water quality on the island of Zanzibar. Through the use of WTF method, the present study estimated the recharge rates, local sustainable yield (SY) and integrated water balance (IWB). Rainfall records showed that Zanzibar Island receives a total mean annual rainfall of 1673 mm out of which 7% (equivalent to 1.79 × 10
6
m
3
/y) recharges the groundwater. Temperature variations indicated an incremental trend accompanied by low rainfall. The average estimated SY was 0.72%, while the IWB showed a deficit of 39%. Furthermore, the total groundwater abstraction rate in the studied area was 2.49 × 10
6
m
3
/y, which was higher than the rate of recharge. This means that the groundwater resources are currently over-exploited and, if immediate action is not taken, the groundwater aquifers may be subjected to pollution, collapse and seawater intrusion. The effects of over-pumping were manifested by high levels of EC, chloride, TDS, total hardness and nitrate that showed an increasing trend with time.</description><identifier>ISSN: 1866-6280</identifier><identifier>EISSN: 1866-6299</identifier><identifier>DOI: 10.1007/s12665-020-09240-8</identifier><language>eng</language><publisher>Berlin/Heidelberg: Springer Berlin Heidelberg</publisher><subject>Airports ; Annual rainfall ; Annual rainfall data ; Aquifers ; Biogeosciences ; Chlorinity ; Climate change ; Coastal aquifers ; Earth and Environmental Science ; Earth Sciences ; Electrical conductivity ; Electrical resistivity ; Environmental Science and Engineering ; Geochemistry ; Geology ; Groundwater ; Groundwater quality ; Groundwater recharge ; Groundwater resources ; Groundwater supply ; Groundwater table ; Hydrologic data ; Hydrology/Water Resources ; Mean annual precipitation ; Original Article ; Physicochemical processes ; Physicochemical properties ; Pumpage ; Rain ; Rainfall ; Rainfall data ; Saline water intrusion ; Salt water intrusion ; Seawater ; Seawater intrusion ; Sustainability ; Sustainable yield ; Temperature ; Temperature variations ; Terrestrial Pollution ; Total dissolved solids ; Water balance ; Water hardness ; Water pollution ; Water quality ; Water resources ; Water shortages ; Water supply ; Water table ; Weather stations</subject><ispartof>Environmental earth sciences, 2020-11, Vol.79 (21), Article 490</ispartof><rights>Springer-Verlag GmbH Germany, part of Springer Nature 2020</rights><rights>Springer-Verlag GmbH Germany, part of Springer Nature 2020.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-a342t-f80a6605addb28b2ffd14fba71af9b6cb9d749ae64ffacae1fd138040fd1b2a3</citedby><cites>FETCH-LOGICAL-a342t-f80a6605addb28b2ffd14fba71af9b6cb9d749ae64ffacae1fd138040fd1b2a3</cites><orcidid>0000-0001-5526-444X</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/s12665-020-09240-8$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s12665-020-09240-8$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,780,784,27924,27925,41488,42557,51319</link.rule.ids></links><search><creatorcontrib>Ali, Zuleikha P.</creatorcontrib><creatorcontrib>Rwiza, Mwemezi J.</creatorcontrib><title>Assessment of the impact of groundwater pumpage on water supply sustainability in Zanzibar, Tanzania</title><title>Environmental earth sciences</title><addtitle>Environ Earth Sci</addtitle><description>In the present study, a 42-year record of rainfall and temperature from Airport and a 43-year rainfall record from Kizimbani meteorological station were analyzed to understand how these climatic variables are affecting groundwater supply on the Island of Zanzibar, Tanzania. Water table fluctuation (WTF) and rainfall data were examined for estimating groundwater recharge. The abstraction volume and recharge rate were used to estimate the water balance. Also, the different physicochemical parameters, such as chlorinity, nitrate, electrical conductivity (EC) and total dissolved solids (TDS) were examined to assess the impact of groundwater pumpage on water quality on the island of Zanzibar. Through the use of WTF method, the present study estimated the recharge rates, local sustainable yield (SY) and integrated water balance (IWB). Rainfall records showed that Zanzibar Island receives a total mean annual rainfall of 1673 mm out of which 7% (equivalent to 1.79 × 10
6
m
3
/y) recharges the groundwater. Temperature variations indicated an incremental trend accompanied by low rainfall. The average estimated SY was 0.72%, while the IWB showed a deficit of 39%. Furthermore, the total groundwater abstraction rate in the studied area was 2.49 × 10
6
m
3
/y, which was higher than the rate of recharge. This means that the groundwater resources are currently over-exploited and, if immediate action is not taken, the groundwater aquifers may be subjected to pollution, collapse and seawater intrusion. The effects of over-pumping were manifested by high levels of EC, chloride, TDS, total hardness and nitrate that showed an increasing trend with time.</description><subject>Airports</subject><subject>Annual rainfall</subject><subject>Annual rainfall data</subject><subject>Aquifers</subject><subject>Biogeosciences</subject><subject>Chlorinity</subject><subject>Climate change</subject><subject>Coastal aquifers</subject><subject>Earth and Environmental Science</subject><subject>Earth Sciences</subject><subject>Electrical conductivity</subject><subject>Electrical resistivity</subject><subject>Environmental Science and Engineering</subject><subject>Geochemistry</subject><subject>Geology</subject><subject>Groundwater</subject><subject>Groundwater quality</subject><subject>Groundwater recharge</subject><subject>Groundwater resources</subject><subject>Groundwater supply</subject><subject>Groundwater table</subject><subject>Hydrologic data</subject><subject>Hydrology/Water Resources</subject><subject>Mean annual precipitation</subject><subject>Original Article</subject><subject>Physicochemical processes</subject><subject>Physicochemical properties</subject><subject>Pumpage</subject><subject>Rain</subject><subject>Rainfall</subject><subject>Rainfall data</subject><subject>Saline water intrusion</subject><subject>Salt water intrusion</subject><subject>Seawater</subject><subject>Seawater intrusion</subject><subject>Sustainability</subject><subject>Sustainable yield</subject><subject>Temperature</subject><subject>Temperature variations</subject><subject>Terrestrial Pollution</subject><subject>Total dissolved solids</subject><subject>Water balance</subject><subject>Water hardness</subject><subject>Water pollution</subject><subject>Water quality</subject><subject>Water resources</subject><subject>Water shortages</subject><subject>Water supply</subject><subject>Water table</subject><subject>Weather stations</subject><issn>1866-6280</issn><issn>1866-6299</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2020</creationdate><recordtype>article</recordtype><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><sourceid>GNUQQ</sourceid><recordid>eNp9UE1LAzEUDKJgqf0DngJeXc1Xs9ljKWqFgpeevISX3aSmtNk12UXqrzd2RW--y7yPmXkwCF1TckcJKe8TZVLOC8JIQSomSKHO0IQqKQvJqur8t1fkEs1S2pFcnPKKyAlqFinZlA429Lh1uH-z2B86qE_TNrZDaD6gtxF3Q15vLW4DHhdp6Lr9MUPqwQcwfu_7I_YBv0L49AbiLd7kDoKHK3ThYJ_s7AenaPP4sFmuivXL0_NysS6AC9YXThGQksyhaQxThjnXUOEMlBRcZWRtqqYUFVgpnIMaLM13roggGQ0DPkU3o20X2_fBpl7v2iGG_FEzUVIhFZc8s9jIqmObUrROd9EfIB41Jfo7Tz3mqXOe-pSnVlnER1HK5LC18c_6H9UXWRF6_g</recordid><startdate>20201101</startdate><enddate>20201101</enddate><creator>Ali, Zuleikha P.</creator><creator>Rwiza, Mwemezi J.</creator><general>Springer Berlin Heidelberg</general><general>Springer Nature B.V</general><scope>AAYXX</scope><scope>CITATION</scope><scope>3V.</scope><scope>7ST</scope><scope>7TG</scope><scope>7UA</scope><scope>7XB</scope><scope>88I</scope><scope>8FK</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>ATCPS</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>BHPHI</scope><scope>BKSAR</scope><scope>C1K</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>F1W</scope><scope>GNUQQ</scope><scope>H96</scope><scope>HCIFZ</scope><scope>KL.</scope><scope>L.G</scope><scope>M2P</scope><scope>PATMY</scope><scope>PCBAR</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PYCSY</scope><scope>Q9U</scope><scope>SOI</scope><orcidid>https://orcid.org/0000-0001-5526-444X</orcidid></search><sort><creationdate>20201101</creationdate><title>Assessment of the impact of groundwater pumpage on water supply sustainability in Zanzibar, Tanzania</title><author>Ali, Zuleikha P. ; Rwiza, Mwemezi J.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a342t-f80a6605addb28b2ffd14fba71af9b6cb9d749ae64ffacae1fd138040fd1b2a3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2020</creationdate><topic>Airports</topic><topic>Annual rainfall</topic><topic>Annual rainfall data</topic><topic>Aquifers</topic><topic>Biogeosciences</topic><topic>Chlorinity</topic><topic>Climate change</topic><topic>Coastal aquifers</topic><topic>Earth and Environmental Science</topic><topic>Earth Sciences</topic><topic>Electrical conductivity</topic><topic>Electrical resistivity</topic><topic>Environmental Science and Engineering</topic><topic>Geochemistry</topic><topic>Geology</topic><topic>Groundwater</topic><topic>Groundwater quality</topic><topic>Groundwater recharge</topic><topic>Groundwater resources</topic><topic>Groundwater supply</topic><topic>Groundwater table</topic><topic>Hydrologic data</topic><topic>Hydrology/Water Resources</topic><topic>Mean annual precipitation</topic><topic>Original Article</topic><topic>Physicochemical processes</topic><topic>Physicochemical properties</topic><topic>Pumpage</topic><topic>Rain</topic><topic>Rainfall</topic><topic>Rainfall data</topic><topic>Saline water intrusion</topic><topic>Salt water intrusion</topic><topic>Seawater</topic><topic>Seawater intrusion</topic><topic>Sustainability</topic><topic>Sustainable yield</topic><topic>Temperature</topic><topic>Temperature variations</topic><topic>Terrestrial Pollution</topic><topic>Total dissolved solids</topic><topic>Water balance</topic><topic>Water hardness</topic><topic>Water pollution</topic><topic>Water quality</topic><topic>Water resources</topic><topic>Water shortages</topic><topic>Water supply</topic><topic>Water table</topic><topic>Weather stations</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Ali, Zuleikha P.</creatorcontrib><creatorcontrib>Rwiza, Mwemezi J.</creatorcontrib><collection>CrossRef</collection><collection>ProQuest Central (Corporate)</collection><collection>Environment Abstracts</collection><collection>Meteorological & Geoastrophysical Abstracts</collection><collection>Water Resources Abstracts</collection><collection>ProQuest Central (purchase pre-March 2016)</collection><collection>Science Database (Alumni Edition)</collection><collection>ProQuest Central (Alumni) (purchase pre-March 2016)</collection><collection>ProQuest Central (Alumni Edition)</collection><collection>ProQuest Central</collection><collection>Agricultural & Environmental Science Collection</collection><collection>ProQuest Central Essentials</collection><collection>ProQuest Central</collection><collection>ProQuest Natural Science Collection</collection><collection>Earth, Atmospheric & Aquatic Science Collection</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ProQuest One Community College</collection><collection>ProQuest Central</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>ProQuest Central Student</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 2: Ocean Technology, Policy & Non-Living Resources</collection><collection>SciTech Premium Collection (Proquest) (PQ_SDU_P3)</collection><collection>Meteorological & Geoastrophysical Abstracts - Academic</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><collection>Science Journals (ProQuest Database)</collection><collection>Environmental Science Database</collection><collection>Earth, Atmospheric & Aquatic Science Database</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>Environmental Science Collection</collection><collection>ProQuest Central Basic</collection><collection>Environment Abstracts</collection><jtitle>Environmental earth sciences</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Ali, Zuleikha P.</au><au>Rwiza, Mwemezi J.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Assessment of the impact of groundwater pumpage on water supply sustainability in Zanzibar, Tanzania</atitle><jtitle>Environmental earth sciences</jtitle><stitle>Environ Earth Sci</stitle><date>2020-11-01</date><risdate>2020</risdate><volume>79</volume><issue>21</issue><artnum>490</artnum><issn>1866-6280</issn><eissn>1866-6299</eissn><abstract>In the present study, a 42-year record of rainfall and temperature from Airport and a 43-year rainfall record from Kizimbani meteorological station were analyzed to understand how these climatic variables are affecting groundwater supply on the Island of Zanzibar, Tanzania. Water table fluctuation (WTF) and rainfall data were examined for estimating groundwater recharge. The abstraction volume and recharge rate were used to estimate the water balance. Also, the different physicochemical parameters, such as chlorinity, nitrate, electrical conductivity (EC) and total dissolved solids (TDS) were examined to assess the impact of groundwater pumpage on water quality on the island of Zanzibar. Through the use of WTF method, the present study estimated the recharge rates, local sustainable yield (SY) and integrated water balance (IWB). Rainfall records showed that Zanzibar Island receives a total mean annual rainfall of 1673 mm out of which 7% (equivalent to 1.79 × 10
6
m
3
/y) recharges the groundwater. Temperature variations indicated an incremental trend accompanied by low rainfall. The average estimated SY was 0.72%, while the IWB showed a deficit of 39%. Furthermore, the total groundwater abstraction rate in the studied area was 2.49 × 10
6
m
3
/y, which was higher than the rate of recharge. This means that the groundwater resources are currently over-exploited and, if immediate action is not taken, the groundwater aquifers may be subjected to pollution, collapse and seawater intrusion. The effects of over-pumping were manifested by high levels of EC, chloride, TDS, total hardness and nitrate that showed an increasing trend with time.</abstract><cop>Berlin/Heidelberg</cop><pub>Springer Berlin Heidelberg</pub><doi>10.1007/s12665-020-09240-8</doi><orcidid>https://orcid.org/0000-0001-5526-444X</orcidid></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 1866-6280 |
| ispartof | Environmental earth sciences, 2020-11, Vol.79 (21), Article 490 |
| issn | 1866-6280 1866-6299 |
| language | eng |
| recordid | cdi_proquest_journals_2471468363 |
| source | Springer Nature |
| subjects | Airports Annual rainfall Annual rainfall data Aquifers Biogeosciences Chlorinity Climate change Coastal aquifers Earth and Environmental Science Earth Sciences Electrical conductivity Electrical resistivity Environmental Science and Engineering Geochemistry Geology Groundwater Groundwater quality Groundwater recharge Groundwater resources Groundwater supply Groundwater table Hydrologic data Hydrology/Water Resources Mean annual precipitation Original Article Physicochemical processes Physicochemical properties Pumpage Rain Rainfall Rainfall data Saline water intrusion Salt water intrusion Seawater Seawater intrusion Sustainability Sustainable yield Temperature Temperature variations Terrestrial Pollution Total dissolved solids Water balance Water hardness Water pollution Water quality Water resources Water shortages Water supply Water table Weather stations |
| title | Assessment of the impact of groundwater pumpage on water supply sustainability in Zanzibar, Tanzania |
| url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2024-12-20T21%3A18%3A20IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-proquest_cross&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Assessment%20of%20the%20impact%20of%20groundwater%20pumpage%20on%20water%20supply%20sustainability%20in%20Zanzibar,%20Tanzania&rft.jtitle=Environmental%20earth%20sciences&rft.au=Ali,%20Zuleikha%20P.&rft.date=2020-11-01&rft.volume=79&rft.issue=21&rft.artnum=490&rft.issn=1866-6280&rft.eissn=1866-6299&rft_id=info:doi/10.1007/s12665-020-09240-8&rft_dat=%3Cproquest_cross%3E2471468363%3C/proquest_cross%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_pqid=2471468363&rft_id=info:pmid/&rfr_iscdi=true |