This appeal presents a constitutional challenge to the Metropolitan River Protection Act (Ga. L. 1973, p. 128 et seq., as amended by Ga. L. 1975, p. 837), and the Chattahoochee Corridor Study, authorized by the River Act and adopted by the City of Atlanta. Atlanta Regional Commission, Chattahoochee Corridor Study (1972).
The Metropolitan River Protection Act ("River Act”) permits a planning commission for a metropolitan area with a population of one million or more persons to develop a comprehensive plan for land and water use along stream corridors when a stream supplies forty percent or more of the water for the metropolitan area. River Act, § 4. A "stream corridor” is all land within 2,000 feet of the water course. Sec. 2 (e). The planning commission is also authorized to develop plans for the fifty-year flood plain of the stream, land which probably will be flooded once every fifty years. Sec. 2 (f).
The Chattahoochee River provides most of the water for the City of Atlanta, and the Atlanta Regional Commission (ARC) developed a comprehensive plan for the 48 mile long stream corridor from Buford Dam to Peachtree Creek. The Commission divided the stream corridor into 23 sections, each of which was analyzed and mapped according to six factors to determine which land was vulnerable to damage by development and which land was suitable for development. Those factors were geology, hydrology, soils, vegetation, slope and aspect. ARC also ranked proposed land uses from recreational use through thirteen housing types to commercial and industrial developments according to the effect of the land *332 use on the land. When the land vulnerability study and the study on effects of development were combined, the result was a development plan which allocated land uses by matching types of development with land best suited for the development.
Even though ARC developed the Corridor Study, the Commission has no enforcement powers. After a political subdivision adopts the Corridor Study, land or water use inconsistent with the Study is forbidden. A use is deemed inconsistent until the political subdivision issues a certificate of compliance for any clearing, construction, excavation or filling in the stream corridor. After issuance of the certificate, ARC reviews the certificate and may recommend modification if it finds that the proposed use is inconsistent with the Corridor Study. The political subdivision may accept the Commission’s recommendation, override it or request reconsideration of the proposed use. River Act, §§ 5, 6.
Minimum standards for the certificate with respect to the subject river’s fifty-year flood plain and the area within 150 feet of the watercourse are specified in the Act. Uses within these overlapping areas are restricted to those uses "not harmful to the water and land resources of the stream corridor... [which do not] significantly impede the natural flow of flood waters, and [which] will not result in significant land erosion, stream bank erosion, siltation or water pollution.’, 1 River Act, § 8. Agricultural and animal husbandry uses as well as ordinary maintenance and landscaping are exempt from the Act’s restrictions. River Act, § 12.
ARC has developed further standards for the flood plain and the area within 150 feet of the watercourse. Grading and vegetation clearance permits are required; cut and fill operations which would alter the natural flow *333 of flood waters are not permitted. Only twenty percent of the flood plain may be covered by an impervious structure. Corridor Study, pp. 54-55.
Appellant Pope owns a 3.7 acre tract of land bordering on the Chattahoochee River, which contains a house, driveway, man-made lake and swimming pool. Pope began construction of a tennis court within the stream corridor without a certificate of compliance from the City of Atlanta. The city issued a stop-work order because the tennis court was an impervious structure partially within the flood plain and within 150 feet of the river. The tennis court also required filling and the construction of a retaining wall.
After issuance of the stop-work order, appellant sought a declaratory judgment from federal district court that the River Act was unconstitutional, but the federal court upheld the statute. Pope v. City of Atlanta, 418 FSupp. 665 (N.D. Ga. 1976), affd. mem., 575 F2d 298 (5th Cir. 1978). Appellant then pressed her claim in the Superior Court of Fulton County. On cross appeals from the first decision of the superior court, this court held that Pope’s state constitutional claims were not barred by the res judicata effect of the federal suit and that the River Act was not an unconstitutional attempt by the Georgia legislature to exercise local zoning power.
Pope v. City of Atlanta,
The inherent police power of the state extends to the protection of the lives, health and property of the citizen, and to the preservation of good order and public morals and is not subject to any definite limitations, but is coextensive with the necessities of the case and the safeguard of public interest.
McCoy v. Sanders,
The distinction between use of eminent domain and use of the police power is that the former involves the taking of property because it is needed for public use while the latter involves the regulation of the property to prevent its use in a manner detrimental to the public interest. 1 Nichols, The Law of Eminent Domain § 1.42 (3d Ed. 1976). Many regulations restrict the use of property, diminish its value or cut off certain property rights, but no compensation for the property owner is required. Among the valid regulations of property are abatement of nuisances,
Davis v. Stark,
The interests advanced by the City of Atlanta for these restrictions on appellant’s property relate to the public health and safety. Sediment is a major pollutant in the Chattahoochee River. Soil erosion not only damages the land, but the soil carried into the river increases the cost of water treatment and reduces channel capacity, resulting in an increased risk of flooding. Corridor Study, p. 54. Clearing vegetation, grading or cut and fill operations which alter the natural elevation or slope of the land may increase surface water run-off and soil erosion. Further, the construction of impervious structures in the flood plain or within 150 feet of the watercourse means that rain water can not be absorbed by the earth. Surface water run-off, soil erosion and the risk of flooding are thus increased. Corridor Study, p. 55. Requiring permits for grading and vegetation clearance, prohibiting cut and fill operations which álter the natural elevation and limiting the construction of impervious structures are reasonable means of guarding against the dangers of soil erosion, sedimentation and increased flooding. River Act, § 4.
When the state’s interests in preventing flooding, halting land erosion and protecting the water supply are weighed against appellant’s interest in constructing her tennis court within 150 feet of the river, the state’s interests weigh heavier in the balance. The dangers which flow from overintensive stream corridor development may render some property unsuitable for development, and the state is entitled to recognize this *336 fact. Although one tennis court might affect the river only slightly, the state is justified in considering the cumulative effect of development when it makes land use plans. Thus, the City of Atlanta and the state have engaged in valid land use regulation and have not appropriated appellant’s land for public use without compensation.
The experience of other state courts in reviewing land use development plans buttresses our conclusion in this case. In a case quite similar to our own the Supreme Court of Washington upheld the refusal to grant building permits for single family homes in the Cedar River flood plain, even though seventy percent of the appellant’s land was in the flood plain. Maple Leaf Investors v. State Dept. of Ecology,
The Wisconsin Supreme Court, using a different rationale, reached a similar result in Just v. Marinette County,
Appellant has cited several cases in which land use development plans were held unconstitutional. One of these, Morris County Land Improvement Co. v. Parsippany-Troy Hills, 40 N. J. 539 (
Although Dooley v. Town Plan & Zoning Comm.,
Appellant also relies heavily upon Justice Holmes’ opinion in Pennsylvania Coal Co. v. Mahon,
A similar objection can be made to appellant’s reliance on Pumpelly v. Green Bay &c. Co.,
We therefore find that the River Act and Corridor Study do not violate the Constitution of Georgia.
Judgment affirmed.
Notes
We read the River Act to apply identical provisions to the flood plain and to the area within 150 feet of the watercourse since these areas overlap. This is ARC’s interpretation of its enabling Act, and this interpretation is given great weight.
Undercofler v. Eastern Air Lines,
The type of land use restriction involved in this case
*335
is unlike zoning; therefore, the factors suggested in
Guhl v. Holcomb Bridge Rd. Corp.,
