Lоuie D. Hawkins brought this action, claiming the city of Greenville (“City”) improperly and negligently designed and maintained its municipal drainage system in the area where his business was located. He alleged the City’s malfeasance caused his property to flood after a rainstorm in 1997. The trial court granted summary judgment in favor of the City on all of Hawkins’ claims. We affirm. 1
FACTS/PROCEDURAL BACKGROUND
On July 24, 1997, Hawkins’ business, Servicemaster of Greenville, was flooded during a heavy rainfall, causing substantial damage to the business and surrоunding property. Hawkins blamed the City for the damage, arguing the flooding *286 was caused by the City’s neglect in designing and maintaining its stormwater drainage system. Accordingly, he brought the present action asserting various causes of action stemming from the City’s alleged acts and failures to act.
I. The Servicemaster Property and Surrounding Drainage System
The Servicemaster property is located in a low-lying area on the east side of Greenville. This part of Greenville has bеen heavily developed with retail businesses and other large commercial developments.
The immediate area surrounding the Servicemaster property forms a 3.24-square-mile stormwater basin. Rainwater falling into the basin drains downhill into nearby Laurel Creek. Over the years, the City and private developers made several improvements to the drainage system in the basin. When Hawkins moved Servicemaster to its Haywood Road location, drainage around the property was handled primarily by two ninety-six-inch pipes installed in Laurel Creek to expand the creek’s ability to effectively handle runoff in the area. After a severe storm in 1991 caused flooding in the area, the City installed an additional large, elliptical arched pipe in Laurel Creek to further increase the creek’s stormwater capacity. In early July 1997, the City installed “riprap” along the banks of the creek to stem erosion that had occurred. 2
II. The 1991 Flood, Lawsuit and Settlement
A heavy rainstorm in July 1991 caused the Servicemaster property and surrounding area to flood. The Servicemaster property suffered substantial damage when the excess runoff flooded into the building, bringing mud and other debris. As in the present case, Hawkins brought suit against the City, claiming its actions caused the flooding. Hawkins specifically alleged the City was negligent “in failing to design” and “maintain a reasonably adequate surface water drainage system” and “in failing tо properly supervise the surface water *287 drainage system to ensure adequate flow of water during periods of increment weather.”
The case was settled in 1994. The City paid Hawkins $4,000 in exchange for a “full, complete and final release of all damages arising out of the design, construction, maintenance, and operation of the water drainage system on or adjacent to Bryland [sic] Drive.” This release was executed in March 1994. It provides:
[Sеrvicemaster] does hereby release, relieve and forever acquit the City of Greenville, South Carolina, a municipal corporation, their agents, employees, officers, successors, and assigns from any and all liability arising out of or in any way connected with the water and mud damage to [Hawkins’] place of business located at 1 Byrdland Drive which occurred on or about July 30, 1991 and it is the intention in executing this Release to forever discharge the City of Greenville from any and all claims, demands, actions or causes of action which may exist, known or unknown, of any and all damages, past, present and future, in any way connected with or arising out of the aforesaid damages.
It is acknowledged and understood that this is a full, complete and final release of all damages arising out of the design, construction, maintenance, and operation of the water drainage system on or adjacent to Bryland [sic] Drive, that no future or further payments will be paid as a result thereof and that the persons and corporations in whose favor this Release runs are herewith fully finally and forever discharged from any and all liability with respect to the aforementioned property.
III. The 1997 Flood and the Present Action
On July 24, 1997, a record amount of rain fell in and around Greenville in a short period of time. 3 Stormwater draining into Laurel Creek overwhelmed the creek’s capacity, causing water to floоd onto the Servicemaster property and several nearby businesses.
*288 In July 1999, Hawkins brought the present action against the City, alleging causes of action for: (1) inverse condemnation, (2) negligence in the City’s design and maintenance of its stormwater drainage system, (3) violation of South Carolina Code section 5-31-450, (4) trespass, (5) conversion, and (6) nuisance. Finding no genuine issue of material fact with respect to any of these claims, the trial court granted the City’s motion for summary judgment.
STANDARD OF REVIEW
A trial court should grant a motion for summary judgment when “the pleadings, depositions, answers to interrogatories, and admissions on file, together with the affidavits, if any, show that there is no genuine issue as to any material fact and that the moving party is entitled to a judgment as a matter of law.” Rule 56(c), SCRCP;
accord Trivelas v. South Carolina Dep’t of Transp.,
“The party seeking summary judgment has the burden of clearly establishing the absence of a genuine issue of material fact.”
McNair v. Rainsford,
“All ambiguities, conclusions, and inferences arising from the evidence must be construed most strongly against the moving party.”
Hall v. Fedor,
In reviewing the grant of a summary judgment motion, this court applies the same standard which governs the trial court: Summary judgment is proper when “there is no genuine issue as to any material fact and that the moving party is entitled to a judgment as a matter of law.” Rule 56(c), SCRCP;
accord Baughman,
LAW/ANALYSIS
Hawkins contends genuine issues of fact exist for each of his claims that should have compelled the trial court to deny the City’s motion for summary judgment. We disagree.
I. Inverse Condemnation
Hawkins first argues the trial court erred in granting summary judgment to the City on his inversе condemnation claim, contending he was deprived of his full rights to the Servicemaster property without just compensation as a result of the City’s design and maintenance of the drainage system. We disagree.
*290
An action for inverse condemnation is appropriate where the government takes private property for public use.
Quality Towing Inc. v. City of Myrtle Beach,
An inverse condemnation occurs when a government agency commits a taking of private property without exercising its formal powers of eminent domain. To establish an inverse condemnation, a plaintiff must show: “(1) an affirmative, positive, aggressive act on the part of the governmental agency; (2) a taking; (3) the taking is for a public use; and (4) the taking has some degree of permanence.”
Marietta Garage, Inc. v. South Carolina Dep’t of Pub. Safety,
*291
In the present case, Hawkins has failed to allege any affirmative acts by the City which damaged the Servicemaster property or otherwise diminished his rights in the property. Most of the City’s “acts” he avers support his inverse condemnation claim are mеrely failures to act. Specifically, Hawkins asserts the City improperly allowed the development of neighboring parcels of commercial property which altered the elevation of the area and added strain to the Laurel Creek drainage pipes beyond their capacity and then failed to replace these pipes. The South Carolina cases addressing inverse condemnation are uniform in requiring that the claim be proved by “affirmative, positive, aggressive” acts by the governmental agency. Allegations of mere failure to act are insufficient.
See, e.g., Berry’s On Main, Inc. v. City of Columbia,
The only affirmative acts Hawkins cites as forming the basis of his inverse condemnation claim are the replacement of the double-box culvert with the large arched pipe in Laurel Creek in 1994 and the installation of the riprap material along the banks of the creek in 1997. The record contains no evidence that either of these acts caused the flooding of the Servicemaster property in 1997. Hawkins’ own expert testifiеd that the installation of the large arched pipe likely improved the drainage situation in the stormwater basin. Regarding the effect of the riprap material on drainage in the Laurel Creek basin, experts for both the City and Hawkins either offered no opinion on the impact of the riprap or opined that it was impossible to determine whether installing the riprap negatively or positively affected drainage.
Based on the lack of any evidence showing an affirmative, positive, aggressive act on the part of the City which would tend to prove the City’s actions caused or precipitated the flooding of the Servicemaster property, we are compelled to *292 affirm the trial court’s grant of summary judgment on Hawkins’ inverse condemnation claim.
II. Negligence
Hawkins argues the trial court erred in finding his negligence claim against the City was barred under the South Carolina Tort Claims Act. S.C.Code Ann. §§ 15-78-10 to 15-78-200 (Supp.2003). We disagrеe.
The Tort Claims Act governs all tort claims against governmental entities.
Flateau v. Harrelson,
Several of these exceptions bear directly upon the alleged acts and failures to act by the City with respect to the municipal drainage system. Specifically, under section 15-78-60, the City is not liable for a loss resulting from: (1) “legislative, judicial, or quasi-judicial action or inaction”; (2) “administrative action or inaction of a legislative, judicial, or quasi-judicial nature”; (3) “adoption, enforcement, or compliance with any law оr failure to adopt or enforce any law, whether valid or invalid, including, but not limited to, any charter, provision, ordinance, resolution, rule, regulation, or written policies”; (4) “the exercise of discretion or judgment by the governmental entity or employee or the performance or failure to perform any act or service which is in the discretion or judgment of the governmental entity or employee”; or (5) “regulatory inspection powers or funсtions, including failure to make an inspection, or making an inadequate or negligent inspection, of any property to determine whether the property complies with or violates any law, regulation, code, or ordinance or contains a hazard to health or safety.” S.C.Code Ann. § 15-78-60(1), (2), (4), (5), and (13) (Supp.2003).
For each of these specific provisions, the determination of immunity from tort liability turns on the question of whether the acts in question were discretionary rаther than ministerial. A finding of immunity under the Act “is contingent on proof the government entity, faced with alternatives, actually weighed competing considerations and made a conscious choice using accepted professional standards.”
Wooten
*294
ex rel. Wooten v. South Carolina Dep’t of Transp.,
Although our courts have not applied the Tort Claims Act to facts similar to those of the present case, the Suprеme Court of Texas has held that municipalities are not liable for the design and planning of their sewage and drainage systems because these acts are considered quasi-judicial, discretionary functions for which a government entity is not liable.
City of Tyler v. Likes,
The duties of the municipal authorities in adopting a general plan of drainage, and determining when and where sewers shall be built, of what size and at what level, are of a quasi judicial nature, involving the exercise of deliberate judgment and large discretion, and depending upon considerations affecting the public health and general convenience throughout an extensive territory; and the exercise of such judgment and discretion in the selection and adoption of a general plan or system of drainage is not subject to revision by a court or jury in a private action for not sufficiently draining a particular lot of land.
Id. We find a comparable degree of discretion was granted to the City in the present case to exercise the measured policy judgments required to build and maintain an adequate municipal sewer and drainage system in Greenville. Accordingly, the City is immune from liability for negligence claims arising out of the design and maintenance of the drainage system in the Laurel Creek Basin.
III. Liability Under South Carolina Code Section 5-31-450
Hawkins next appeals the trial court’s grant of summary judgment as to his claim under South Carolina Code section 5-31-450. We find no error with thе trial court’s ruling.
Section 5-31-450 mandates:
*295 Whenever, within the boundaries of any municipality, it shall be necessary or desirable to carry off the surface water from any street, alley or other public thoroughfare along such thoroughfare rather than over private lands adjacent to or adjoining such thoroughfare, such municipality shall, upon demand from the owner of such private lands, provide sufficient drainage for such water through open or covered drains, exceрt when the formation of the street renders it impracticable, along or under such streets, alleys or other thoroughfare in such manner as to prevent the passage of such water over such private lands or property. But if such drains cannot be had along or under such streets, alleys or other thoroughfare, the municipal authorities may obtain, under proper proceedings for condemnation on payment of damages to the landownеr, a right of way through the lands of such landowner for the necessary drains for such drainage. If any municipal corporation in this State shall fail or refuse to carry out the provisions of this section, any person injured thereby may have and maintain an action against such municipality for the actual damages sustained by such person.
Applying this statute, our courts have held that liability does not obtain under section 5-31-450 absent some affirmative act by the municipality whiсh alters the course or increases the amount of stormwater runoff onto private property.
See Brown v. Sch. Dist. of Greenville County,
Hawkins failed to offer proof of any affirmative, positive acts which would tend to show the actions of the City caused the flooding of the Servicemaster property. We approve the trial court’s finding that Hawkins’ claim under section 5-31-450 fails.
IV. Trespass
Hawkins appeals the trial court’s grant of summary judgment as to his claim for trespass against real property. We find no error with the trial court’s ruling.
“[T]respass is any intentional invasion of the plaintiffs interest in the exclusive possession of his property.... ”
Hedgepath v. Am. Tel. Tel. Co.,
For a trespass action to lie, “the act must be affirmative, the invasion of the land must be intentional, and the harm caused by the invasion of the land must be the direct result of that invasion.”
Mack v. Edens,
Having failed to show any affirmative and intentional act necessary to sustain an action for trespass, we hold the trial court properly granted summary judgment.
V. Conversion
Hawkins next argues the trial court erred in granting summary judgment on his claim for conversion. We disagree.
“Conversion is the unauthоrized assumption and exercise of the right of ownership over goods or personal chattels belonging to another, to the alteration of the condition or the exclusion of the owner’s rights.”
Crane v. Citicorp Nat’l Servs., Inc.,
We affirm the trial court’s decision to grant summary judgment on Hawkins’ conversion claim.
CONCLUSION
Finding no genuine issue of material fact with respect to any of Hawkins’ causes of actiоn, we conclude summary judgment in favor of the City was proper. The judgment of the trial court is therefore
AFFIRMED.
Notes
. We decide this case without oral argument pursuant to Rule 215, SCACR.
. “Riprap'' is an industry term for piles of loose stone or angular boulders built seaward of the shoreline to prevent erosion by waves or currents.
. Testimony was offered at the summary judgment hearing that the National Climatic Data Center recorded that 2.51 inches fell in Green-ville during a one-hour period on July 24, 1997.
