Since 1970, U.S. Army Corps of Engineers, Galveston District, has been using dredged sediments from the Houston ship channel to create and restore salt marshes in Galveston Bay. Some projects have failed due to excessive sediment erosion or siltation. The research reported here applies an engineering approach to analysis of tidal creeks in natural and beneficial use marshes of Galveston Bay. The hydrodynamic numerical model, DYNLET, was used to assess circulation in marsh channels. A preliminary sediment transport model was developed to analyze erosion and deposition for the same channels. In situ flume experiments were conducted to determine the sediment erodibility in natural and constructed marshes. A natural reference marsh, Elm Grove, was studied to understand marsh hydrodynamics and model calibration. The model results show that DYNLET can largely duplicate the marsh hydrodynamics and the sediment transport model can provide preliminary indication of erosion in tidal creeks. Analysis of the preliminary channel layout of the beneficial-use marsh demonstrated that channels will have sufficient circulation and optimum velocities.

Disposal and beneficial-use options for street sweeping residuals collected as part of routine roadway maintenance activities in Florida, USA, were assessed by characterizing approximately 200 samples collected from 20 municipalities. Total concentrations (mg/kg or μg/kg) and leachable concentrations (mg/L or μg/L) of 11 metals and a number of organic pollutant groups (volatile organics, semi-volatile organics, pesticides, herbicides, carbamates) in the samples were measured. The synthetic precipitation leaching procedure (SPLP) was performed to evaluate the leachability of the pollutants. From the total metal analysis, several metals (e.g., arsenic, barium, chromium, copper, nickel, lead, and zinc) were commonly found above their detection limits. Zinc was found to have the highest mean concentration of all metals measured (46.7 mg/kg), followed by copper (10.7 mg/kg) and barium (10.5 mg/kg). The metal with the smallest mean concentration was arsenic (0.48 mg/kg). A small fraction of the total arsenic, barium, lead, and zinc leached in some samples using the SPLP; leached concentrations were relatively low. A few organic compounds (e.g., 4,4′-DDT, endrin, and endosulfan II) were detected in a limited number of samples. When the total and leaching results were compared to risk-based Florida soil cleanup target levels and groundwater cleanup target levels, the street sweepings were not found to pose a significant human-health risk via direct exposure or groundwater contamination.

No description available.

From the Proceedings of the 1972 Meetings of the Arizona Section - American Water Resources Assn. and the Hydrology Section - Arizona Academy of Science - May 5-6, 1972, Prescott, Arizona / Pressure is being brought to bear on national resources of air, earth, and water in the growing cities in the arid southwest. Legal questions involved in capturing urban runoff and putting it to a beneficial use are examined. Urbanization of a watershed results in a 3 to 5 fold increase in runoff amounts. Legal aspects include tort liability from floods, water rights to the increased flows, land use restrictions along banks and flood plains, condemnation of land for park development and flowage easements, financing problems, zoning applications, and coordination of governmental bodies responsible for parks, storm drainage and related services. Urban runoff is the most obvious legal problem in the tort liability area. It appears feasible to divert small quantities of water from urban wastes for recreational uses which provide flood control benefits. It appears that municipalities could appropriate increased flows caused by urbanization. The ultimate legal questions remain to be resolved by legislation, litigation or extension of the appropriative system.

From the Proceedings of the 1974 Meetings of the Arizona Section - American Water Resources Assn. and the Hydrology Section - Arizona Academy of Science - April 19-20, 1974, Flagstaff, Arizona / The doctrine of prior appropriation used in the arid western states has encouraged rapid exploitation of our natural water resources. Those who beneficially used the water first, regardless of type of use or efficiency, obtained a perpetual right to always be first. As frontiers for exploiting our natural resources shrink, the Appropriation Doctrine is changing under the stresses of the 1970's. Our water allocations system is changing as new water -use priorities emerge along with changing quality standards. Government at all levels, along with planners and engineers, must understand the institutional and legal constraints put on water development by our historic water rights system so that intelligent decisions can be made in developing and maintaining our natural water resources.

The concept "beneficial use" plays a pivotal role in South African water law reform. It forms the foundation of the mechanism to make water use rights available for the reform of the allocation of water use entitlements. The mechanism involves that water use rights that were unexercised in the two years before the promulgation of the National Water Act 36 of 1998 are not defined as existing lawful water uses. Where the concept "beneficial use" is utilised to cancel unexercised water use rights, it can cause potential hardship. Some people whose rights have been cancelled believe that they should be able to rely on the property clause in section 25 of the Constitution of 1996 to either have the legislation declared unconstitutional or to demand compensation. Section 25 of the Constitution of 1996 prohibits the arbitrary deprivation of property and states that property may only be expropriated for a public purpose or in the public interest, subject to compensation. Section 25(4) states, however, that the public interest includes the nation's commitment to land reform and to reforms to bring about equitable access to all South Africa's natural resources. It is clear from this that reforms to bring about access to water are allowed by the property clause. One of the main questions discussed in this thesis was whether section 32 of the National Water Act 36 of 1998 that made more water available for distribution for reform purposes by cancelling unexercised water user rights, leads to an arbitrary deprivation or an expropriation of property. It should be noted that section 32 of the National Water Act did not constitute an arbitrary deprivation of property, as sufficient reason exists for water law reform. A possible constitutional challenge based on the lack of due process of law because of the retrospective operation of the section may possibly be averted because of the existence of section 33 of the National Water Act. Section 33 of the Act mitigates hardship by allowing unexercised water uses to be declared existing lawful water uses in certain circumstances where a good reason for the non–exercise of the water use right existed. Even in cases where section 33 does not prevent section 32 from being regarded as an arbitrary deprivation of property because there still was not a proper procedure, the government will probably be able to show that the limitation in section 32 is, in terms of section 36(1) of the Constitution of 1996, reasonable and justifiable in an open and democratic society. Despite the fact that section 25(1) prohibits arbitrary deprivations, it does not prohibit the government from regulating competing rights to use water even though some people may be negatively affected by the regulation. Because the Minister merely acts as public trustee of the nation's water resources on behalf of the national government in terms section 3(1) of the National Water Act, it cannot be claimed that the government acquired the cancelled water use rights. A claim that compensation should be paid for an expropriation of property will therefore not succeed. Compensation is only payable in terms of section 22(6) and section 22(7) of the National Water Act 36 of 1998 for a loss of existing water entitlements, such as existing lawful water uses or existing licences. A court should thus consider interpreting section 25 by providing for compensation where an individual was unfairly burdened and was therefore denied the protection of the equality clause in section 9 of the Constitution when his unexercised water use rights were cancelled by section 32. The concept "beneficial use" currently restricts the content of the water use entitlement existing in terms of section 4 of the National Water Act 36 of 1998. The loss of the entitlement when inter alia a licence for an existing lawful water use is refused, is not protected by the payment of compensation when water is used in an unfair or disproportionate manner, because such utilisation would not be regarded to be beneficial use. It became apparent that in terms of the current water law dispensation in South Africa, the possibility of compensation for an amendment of a water use licence and the refusal of a licence for an existing lawful water use implies that a water use entitlement is a right in property. The fact that section 22(7) of the National Water Act states that the amount of the compensation must be determined in accordance with section 25(3) of the Constitution implies that the legislature also recognises that a water use entitlement is constitutional property. Section 22(7) of the National Water Act underlines the basic premises of the National Water Act by subjecting the amount of the compensation that is payable to the same limitations that restrict the entitlement to use the water. The stipulations of section 22(7) draw the attention to the fact that the exercise of both existing lawful water uses and water use licences as rights in property is subject to basic principles of the National Water Act such as the Reserve and the concepts "public trusteeship" and "beneficial use" of the water resources. The fact that compensation is only payable when there has been severe prejudice to the economic viability of an undertaking implies that water use entitlements have to be exercised at the time of the application for the compensation to be payable. The concept "beneficial use" – in the sense that a water use must not be wasteful or polluting and in the sense that only water use entitlements that are being exercised are protected – thus restricts the water use entitlement as a property right. During the research, American and Australian water law reform and their interpretation of their property clauses were compared to water law reform in South Africa and the South African property clause. Furthermore, Australian policy to encourage more beneficial water use by the trade in water entitlements or allocations, was also discussed. South Africans will likely in future be encouraged to trade in water use entitlements or allocations. The objective with allowing the trade in water use entitlements or allocations is to encourage people to rather use water for uses with a high value instead of uses with a lower value. In this way the concept "beneficial use" may be broadened to include water allocation or entitlement trading. However, it was argued that a disproportionate impact on third parties would mean that water allocation or entitlement trading would in some cases not be regarded as beneficial use anymore. / Thesis (LL.D.)--North-West University, Potchefstroom Campus, 2011.

The concept "beneficial use" plays a pivotal role in South African water law reform. It forms the foundation of the mechanism to make water use rights available for the reform of the allocation of water use entitlements. The mechanism involves that water use rights that were unexercised in the two years before the promulgation of the National Water Act 36 of 1998 are not defined as existing lawful water uses. Where the concept "beneficial use" is utilised to cancel unexercised water use rights, it can cause potential hardship. Some people whose rights have been cancelled believe that they should be able to rely on the property clause in section 25 of the Constitution of 1996 to either have the legislation declared unconstitutional or to demand compensation. Section 25 of the Constitution of 1996 prohibits the arbitrary deprivation of property and states that property may only be expropriated for a public purpose or in the public interest, subject to compensation. Section 25(4) states, however, that the public interest includes the nation's commitment to land reform and to reforms to bring about equitable access to all South Africa's natural resources. It is clear from this that reforms to bring about access to water are allowed by the property clause. One of the main questions discussed in this thesis was whether section 32 of the National Water Act 36 of 1998 that made more water available for distribution for reform purposes by cancelling unexercised water user rights, leads to an arbitrary deprivation or an expropriation of property. It should be noted that section 32 of the National Water Act did not constitute an arbitrary deprivation of property, as sufficient reason exists for water law reform. A possible constitutional challenge based on the lack of due process of law because of the retrospective operation of the section may possibly be averted because of the existence of section 33 of the National Water Act. Section 33 of the Act mitigates hardship by allowing unexercised water uses to be declared existing lawful water uses in certain circumstances where a good reason for the non–exercise of the water use right existed. Even in cases where section 33 does not prevent section 32 from being regarded as an arbitrary deprivation of property because there still was not a proper procedure, the government will probably be able to show that the limitation in section 32 is, in terms of section 36(1) of the Constitution of 1996, reasonable and justifiable in an open and democratic society. Despite the fact that section 25(1) prohibits arbitrary deprivations, it does not prohibit the government from regulating competing rights to use water even though some people may be negatively affected by the regulation. Because the Minister merely acts as public trustee of the nation's water resources on behalf of the national government in terms section 3(1) of the National Water Act, it cannot be claimed that the government acquired the cancelled water use rights. A claim that compensation should be paid for an expropriation of property will therefore not succeed. Compensation is only payable in terms of section 22(6) and section 22(7) of the National Water Act 36 of 1998 for a loss of existing water entitlements, such as existing lawful water uses or existing licences. A court should thus consider interpreting section 25 by providing for compensation where an individual was unfairly burdened and was therefore denied the protection of the equality clause in section 9 of the Constitution when his unexercised water use rights were cancelled by section 32. The concept "beneficial use" currently restricts the content of the water use entitlement existing in terms of section 4 of the National Water Act 36 of 1998. The loss of the entitlement when inter alia a licence for an existing lawful water use is refused, is not protected by the payment of compensation when water is used in an unfair or disproportionate manner, because such utilisation would not be regarded to be beneficial use. It became apparent that in terms of the current water law dispensation in South Africa, the possibility of compensation for an amendment of a water use licence and the refusal of a licence for an existing lawful water use implies that a water use entitlement is a right in property. The fact that section 22(7) of the National Water Act states that the amount of the compensation must be determined in accordance with section 25(3) of the Constitution implies that the legislature also recognises that a water use entitlement is constitutional property. Section 22(7) of the National Water Act underlines the basic premises of the National Water Act by subjecting the amount of the compensation that is payable to the same limitations that restrict the entitlement to use the water. The stipulations of section 22(7) draw the attention to the fact that the exercise of both existing lawful water uses and water use licences as rights in property is subject to basic principles of the National Water Act such as the Reserve and the concepts "public trusteeship" and "beneficial use" of the water resources. The fact that compensation is only payable when there has been severe prejudice to the economic viability of an undertaking implies that water use entitlements have to be exercised at the time of the application for the compensation to be payable. The concept "beneficial use" – in the sense that a water use must not be wasteful or polluting and in the sense that only water use entitlements that are being exercised are protected – thus restricts the water use entitlement as a property right. During the research, American and Australian water law reform and their interpretation of their property clauses were compared to water law reform in South Africa and the South African property clause. Furthermore, Australian policy to encourage more beneficial water use by the trade in water entitlements or allocations, was also discussed. South Africans will likely in future be encouraged to trade in water use entitlements or allocations. The objective with allowing the trade in water use entitlements or allocations is to encourage people to rather use water for uses with a high value instead of uses with a lower value. In this way the concept "beneficial use" may be broadened to include water allocation or entitlement trading. However, it was argued that a disproportionate impact on third parties would mean that water allocation or entitlement trading would in some cases not be regarded as beneficial use anymore. / Thesis (LL.D.)--North-West University, Potchefstroom Campus, 2011.