Abstract
A fundamental challenge in international water law is reconciling the sovereignty of one state with regard to the use of transboundary water resources within its territory on the one hand, and the territorial integrity of co-riparian states on the other. At its core, this conflict concerns the extent of the restrictions on riparian states regarding the utilization of shared watercourses under international law. This chapter provides an overview of the development and theoretical bases of international water law. At the beginning of the twentieth century, the rules governing the non-navigational uses of transboundary watercourses were still unclear and highly controversial, and the general discourse on the matter was dominated by the two opposing theories of absolute territorial sovereignty and absolute territorial integrity. A balance between these opposing views was eventually found in the theory of limited territorial sovereignty. Current international water law is based on the theories of limited territorial sovereignty and the community of interest, from which the rights and obligations of the riparian states of shared watercourses are derived.
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Notes
- 1.
- 2.
McCaffrey (2007), p. 61. The FAO Index of International Water Resources Treaties, Declarations, Acts and Cases contains over 2000 water agreements between states, see FAO (1978, 1984). More recent treaties are contained in the International Freshwater Treaties Database of the Oregon State University, https://transboundarywaters.science.oregonstate.edu/content/international-freshwater-treaties-database (accessed 25 June 2019). The overwhelming majority of these agreements concern surface water; only in recent decades has groundwater become more prominently taken into account in treaty practice and international law, see McCaffrey (2007), p. 484; Brown Weiss (2007), pp. 210–211.
- 3.
- 4.
McCaffrey (2007), p. 59.
- 5.
- 6.
For example, the Treaty of Amity, Commerce and Navigation between Great Britain and the United States (signed 19 November 1794), CTS 52 (1793–1795), p. 243; Part VII (Navigation des rivières traversant différens Ètats) Acte du Congrès de Vienne, 9 June 1815, http://gallica.bnf.fr/ark:/12148/bpt6k91227n/f1.image (accessed 25 June 2019); Convention relative to the Free Navigation of the Elbe, 23 June 1821, BFSP 8 (1820–1821), p. 953; Revised Rhine Navigation Act, 17 October 1868, http://www.ccr-zkr.org/13020300-de.html (accessed 25 June 2019); Part XII (Ports, Voies d’eau et Voies ferrées) Traité de Versailles, 28 June 1919, reproduced in Librairie Militaire Berger-Levrault, 1919. For an overview of treaty practice, see Boisson de Chazournes (2005), pp. 14–22.
- 7.
- 8.
Caflisch (1989), p. 135.
- 9.
Caflisch (1998), p. 7.
- 10.
- 11.
ILA, Helsinki Rules on the Uses of the Waters of International Rivers, Report of the Fifty-Second Conference held at Helsinki 1966, 1967, p. 477.
- 12.
In addition to the Helsinki Rules of 1966, its work includes numerous other rules, resolutions, and articles, such as the 2004 Berlin Rules on Water Resources. For an overview of the work of the ILA, see Caponera (2007), p. 200.
- 13.
- 14.
- 15.
See ILA, Report of the Seventy-First Conference held in Berlin 2004, p. 334.
- 16.
Mager (2015), p. 14.
- 17.
For dissenting opinions within the ILA, see ILA Berlin Conference 2004 – Water Resources Committee Report: Dissenting Opinion, https://www.internationalwaterlaw.org/documents/intldocs/ILA/ILABerlinRulesDissent2004.pdf (accessed 15 June 2019).
- 18.
- 19.
So-called soft law, such as declarations of international organizations and conferences, is not a legal source of international law. It is, however, no less complied with than binding agreements and it may serve as an indicator of legal conviction or point to trends in the development of international law. It can also often be used to interpret traditional legal sources. Nowadays, non-binding instruments are almost as important as the traditional rules of positive law. See Brown Weiss (1999), pp. 1566–1570.
- 20.
Nanda and Pring (2013), p. 300. These soft-law instruments include the Resolution on the Use of International Non-maritime Waters of the Institute of International Law, 11 September 1961, Annuaire de l’Institut de Droit International 49-II (1961), p. 381; Declaration of the United Nations Conference on the Human Environment, in: Report of the United Nations Conference on the Human Environment, Stockholm, 5–16 June 1972, UN Doc. A/CONF.48/14/Rev. 1, p. 3; Mar del Plata Action Plan, in: Report of the United Nations Water Conference, Mar del Plata, 14–25 March 1977, UN Doc. E/CONF.70/29, p. 3; Draft Principles of Conduct in the Field of the Environment for the Guidance of States in the Conservation and Harmonious Utilization of Natural Resources Shared by Two or More States, 19 May 1978, UN Doc. UNEP/IG12/2; ILA Rules on Water Pollution in an International Drainage Basin, Report of the Sixtieth Conference held at Montreal 1982, p. 535; ILA Seoul Rules on International Groundwaters, Report of the Sixty-Second Conference held at Seoul in 1986; United Nations Conference on Environment and Development, Rio de Janeiro, 3–14 June 1992, Chap. 18 “Protection of the Quality and Supply of Freshwater Resources: Application of Integrated Approaches to the Development, Management and Use of Water Resources”, UN Doc. A/CONF.151/26, Vol. I, 1992. For an overview of soft-law instruments that contributed significantly to the development of international water law, see Nanda and Pring (2013), pp. 300–305.
- 21.
- 22.
Boisson de Chazournes (2013), p. 117.
- 23.
Ibid., p. 120.
- 24.
This is Chap. 18 “Protection of the Quality and Supply of Freshwater Resources: Application of Integrated Approaches to the Development, Management and Use of Water Resources”, United Nations Conference on Environment and Development, Agenda 21, June 1992, UN Doc. A/CONF.151/26, Vol. I, 1992.
- 25.
Caponera (2007), p. 186.
- 26.
- 27.
UN GA Res. 2669 (XXV), 8 December 1970.
- 28.
ILC, Draft Articles on the Law of the Non-Navigational Uses of International Watercourses and commentaries thereto adopted by the Drafting Committee on second reading, YBILC 1994, Vol. II, Pt. 2, p. 89.
- 29.
UN Doc. A/RES/51/869, 21 May 1997, ILM 36 (1997), p. 700.
- 30.
- 31.
See Beyerlin and Marauhn (2011), p. 88.
- 32.
- 33.
Harmon stated: “The rules, principles, and precedents of international law impose no duty or obligation upon the United States of denying to its inhabitants the use of the water of that part of the Rio Grande lying entirely within the United States, although such use results in reducing the volume of water in the river below the point where it ceases to be entirely within the United States. […] The fundamental principle of international law is the absolute sovereignty of every nation, as against all others within its own territory.” Digest of Official Opinions of the Attorneys-General of the United States, Vol. 17–25 (1881–1906), 21 Op. Atty. Gen. 1908, p. 274, 281.
- 34.
Convention concerning the Equitable Distribution of the Waters of the Rio Grande for Irrigation Purposes, 21 May 1906, U.S. Department of State, U.S. Treaty Series, No. 455, 1919, p. 3. On this dispute, see McCaffrey (2007), pp. 113–114.
- 35.
For example, with regard to the use of the Euphrates and Tigris, Turkey invoked its absolute sovereignty over those parts of the river in its territory, see Wick (2013), p. 123.
- 36.
- 37.
- 38.
- 39.
- 40.
See the preamble of the Agreement between the Republic of the Sudan and the United Arab Republic for the Full Utilization of the Nile Waters, 8 November 1959, UNTS, Vol. 453, p. 51.
- 41.
NBI, http://www.nilebasin.org (accessed 15 June 2019).
- 42.
See also Bulto (2009), p. 304.
- 43.
The most widely known decision is probably the arbitration award in the Lake Lanoux case, Lake Lanoux Arbitration (France v. Spain), 16 November 1957, RIAA XII (1957), p. 281, in the original French. For English translations, see ILR 24 (1957), p. 101 and AJIL 53 (1959), p. 156. English summary of the award in YBILC 1974, Vol. 2, Pt. 2, p. 194. See also Caflisch (1989), pp. 49–50; Caponera (2007), p. 216; Boisson de Chazournes (2005), p. 18; Maḥfūẓ Muḥammad (2009), p. 477.
- 44.
See the historical survey of the views of publicists at McCaffrey (2007), pp. 122–125.
- 45.
Brown Weiss (2007), p. 187; Fitzmaurice (2001), pp. 432–433; Lipper (1967), pp. 22–23; Beyerlin (2000), pp. 54–55; Salman (2007), p. 627; Bulto (2009), p. 304; in the writings of Sudanese commentators for example ‘Alī Ṭāhā (2005), p. 192; in the writings of Egyptian commentators for example Maḥfūẓ Muḥammad (2009), p. 477.
- 46.
McCaffrey (2007), p. 398.
- 47.
See Art. 2, para. 1 Charter of the United Nations.
- 48.
Caponera (2007), p. 216.
- 49.
- 50.
- 51.
- 52.
For a survey of state practice, see McCaffrey (2007), pp. 127–131.
- 53.
Trail Smelter Arbitration (United States v. Canada), 16 April 1938 and 11 March 1941, RIAA III 1949, p. 1905.
- 54.
- 55.
- 56.
For a detailed discussion see Chap. 8.
- 57.
- 58.
- 59.
- 60.
- 61.
- 62.
- 63.
- 64.
For an overview of state practice, see McCaffrey (1986), pp. 103–105 and 110–113.
- 65.
The most important decisions include: PCIJ, Case relating to the Territorial Jurisdiction of the International Commission of the River Oder, Judgment No. 16, 10 September 1929, PCIJ Series A.-No. 23, p. 27; ICJ, The Corfu Channel Case (United Kingdom v. Albania), Judgment of 9 April 1949, ICJ Reports 1949, p. 4; Trail Smelter Arbitration (United States v. Canada), 16 April 1938 and 11 March 1941, RIAA III 1949, p. 1905; Lake Lanoux Arbitration (France v. Spain), 16 November 1957, RIAA XII (1957), p. 281; ICJ, Gabčíkovo-Nagymaros Project (Hungary v. Slovakia), Judgment of 25 September 1997, ICJ Reports 1997, p. 7. A detailed discussion of the decisions can be found at McCaffrey (1986), pp. 113–122; Lipper (1967), pp. 28–30.
- 66.
- 67.
Lake Lanoux Arbitration (France v. Spain), 16 November 1957, RIAA XII (1957), p. 281, in the original French. For English translations, see ILR 24 (1957) p. 101 and AJIL 53 (1959), p. 156. See also McCaffrey (2007), p. 144.
- 68.
English translation in ILR 24 (1957) p. 129, of the original Lake Lanoux Arbitration (France v. Spain), 16 November 1957, RIAA XII (1957), p. 308, para. 13: “il existe un principe interdisant à l’Etat d’amont d’altérer les eaux d’un fleuve dans des conditions de nature à nuire gravement à l’Etat d’aval”.
- 69.
Ibid.
- 70.
- 71.
Brown Weiss (2007), p. 194.
- 72.
- 73.
See principally McCaffrey (2007), p. 147.
- 74.
- 75.
Lipper (1967), p. 38.
- 76.
McCaffrey (2007), pp. 166–168.
- 77.
See for example the survey of views of publicists since Grotius ibid., pp. 156–160.
- 78.
See the survey of state practice ibid., pp. 151–156.
- 79.
See Art. 2, para. 2 Protocol on Shared Watercourse Systems in the Southern African Development Community (SADC) Region (signed 28 August 1995, entered into force 29 December 1998), reproduced in FAO, 1997, p. 146.
- 80.
See Art. 3, para. 9 of the CFA.
- 81.
- 82.
PCIJ, Case relating to the Territorial Jurisdiction of the International Commission of the River Oder, Judgment No. 16, 10 September 1929, PCIJ Series A.-No. 23, p. 27. See the discussion of this judgment at McCaffrey (2007), pp. 148–150.
- 83.
PCIJ, Case relating to the Territorial Jurisdiction of the International Commission of the River Oder, Judgment No. 16, 10 September 1929, PCIJ Series A.-No. 23, p. 27.
- 84.
ICJ, Gabčíkovo-Nagymaros Project (Hungary v. Slovakia), Judgment of 25 September 1997, ICJ Reports 1997, p. 56, para. 85.
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Wehling, P. (2020). Development of International Water Law. In: Nile Water Rights. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-60796-1_2
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