Ridge Line, Inc. appeals from a judgment following trial by the United States Court of Federal Claims,
Ridge Line, Inc. v. United States,
No. 98-CV-929,
BACKGROUND
West Virginia is so mountainous that land development often leads to greatly increased flow and velocity of storm water runoff due to the reduced capacity of water absorption by the developed property. Ridge Line owns land on which is located Southridge Centre, the largest shopping center and mixed-use commercial development in West Virginia. In 1991, the government purchased a piece of property *1351 adjacent to and uphill from the shopping center to build a United States Postal Service facility. Storm water from both the Postal Service property and Southridge Centre drains into South Hollow, which lies between the Postal Service property and the shopping center. At the time the Postal Service developed its property, Ridge Line owned only a portion of South Hollow. In the years following the construction of the Postal Service facility, other portions of South Hollow were also acquired by Ridge Line.
When the Postal Service facility was completed in late 1993, storm water runoff into South Hollow sharply increased due to the construction of impervious surfaces on much of the government land. Evidence was offered that the development increased the storm runoff by 70-150%. According to Ridge Line’s evidence, approximately 80% of post-development runoff into South Hollow in 1993 was coming from the Postal Service property as opposed to Ridge Line’s property. Although the Postal Service facility included a drainage swale and drains and the Postal Service constructed а check dam on Ridge Line’s property in South Hollow to control runoff, Ridge Line notes that storm water runoff into South Hollow became so extreme that it began to receive complaints of flooding from downstream neighbors, including a homeowner along Davis Creek which is fed by the effluent from South Hollow.
In 1993, Ridge Line built a storm water detention pond in South Hollow. Ridge Line claims that it was forced to construct the water detention facilities much earlier and on a larger scale than would have been required without the increased runoff caused by the government develоpment. It asked the Postal Service to share in the cost of constructing the detention facilities. However, negotiation failed over the issue of the amount of the government’s contribution. In the end, the government refused to pay anything. Ridge Line then sued the government in the Court of Federal Claims on December 19,1998 claiming that the additional water flow caused by the development of the Postal Service facility constituted a taking by the government of a flowage easement entitling it to compensation under the Takings Clause of the United States Constitution. The taking was alleged to have occurred in 1993. Ridge Line sought the costs it has incurred to deal with the government’s runoff and reasonably projected costs to be incurred in the future.
Between 1994 and 2000, Ridge Line expanded the shopping center with more recreational facilities. It also built new, larger storm water management facilities in South Hollow. Even more recently, Ridge Line added additional landfill to South Hollow, covering the original storm water detention pond and most or all of the portions of South Hollow that it claims were damaged by the erosion caused by storm water discharge from the Postal Service property.
The trial court, after a site inspection in 2002 and a two-and-a-half-day trial,
1
found that the Postal Service development created at least a 70% increase in storm drainage onto Ridge Line’s property.
Ridge Line,
After thе trial court entered judgment for the government, Ridge Line timely appealed to this court. We have jurisdiction under 28 U.S.C. § 1295(a)(3).
DISCUSSION
A determination of whether a taking compensable under the Fifth Amendment has occurred is a question of law based on factual underpinnings.
Alves v. United States,
I.
Despite Ridge Line’s contention that the taking in this case was the appropriation of a flowage easement by inverse condemnation, the trial court confined its analysis of liability to whether the govеrnment’s actions constituted a “permanent and exclusive occupation.”
See Ridge Line,
It is well established that the government may not take an easement without just compensation.
United States v. Dickinson,
Similarly, government actions may not impose upon a private landowner a flowage easement without just compensation.
Dickinson,
Three points made by the Supreme Court in
Dickinson
are particularly relevant to the present case. First, the Court affirmed the judgment and the value assessed for the government’s taking of an easement by inverse condemnation for intermittent flooding of land.
Id.
at 751,
In the present case, the trial court referred to
Dickinson,
but only in the context of rejecting the government’s argument that Ridge Line’s claim was barred by the statute of limitations.
Ridge Line,
the Government could have condemned the property at any time, but it chose not to. The Government’s inaction had “left the taking to physical events, thereby putting on the owner the onus of determining the decisive moment in the process of acquisition by the United States when the fact of taking could no longer be in controversy.”
“When the Government chooses not to condemn land but to bring about a taking by a continuing process of physical events, the owner is not required to resort either to piecemeal or to premature litigation to ascertain the just compensation for what is really ‘taken.’”
Id.
at *5-6 (quoting
Dickinson,
The trial court likewise apparently saw no analogy between Ridge Line’s claim that the government had appropriated an easement and the easement imposed by inverse condemnation in
Nollan. See Nollan,
II.
Turning to the present case, Ridge Line claims that the increased storm water runoff caused by the Postal Service development constituted the government’s taking of a water flowage easement in 1993 and just compensation for the taking is a proportional share of the cost in building, expanding and maintaining the flood control system in South Hollow. Before the trial court, as here, Ridge Line relied on Nollan and Dickinson. 3 However, the trial court failed to address Ridge Line’s claim for inverse condemnation of a flowage easement even though it was so presented. This was error.
The trial court thus erred in requiring that to recover Ridge Line must show that its property was “ ‘effectually destroyed’ ” or suffered a ‘“permanent and exclusive occupation by the government that destroyed the owner’s right to possession.’ ”
Ridge Line,
Thus, although the trial court seems to have properly determined that no taking occurred due to permanent and exclusive physical occupation by the government, it failed to address Ridge Line’s principal contention: whether the increased water runoff constituted a taking of a flowage easement by inverse condemnation. We therefore vacate and remand for analysis of the evidence in accordance with the taking of a flowage easement by inverse condemnation.
III.
Ridge Line’s assertion of a claim for inverse condemnation invokes a two-part analysis. First, Ridge Line must establish that treatment under takings law, as opposed to tort law, is appropriate under the circumstances.
See Barnes v. United States,
IV
A
“Inverse condemnation law is tied to, and parallels, tort law.” 9 Patrick J. Rohan & Melvin A. Reskin, Niohols on Eminent Domain § 34.08[1] (3d ed. 1980 & Supp. 2002). Thus, nоt every “invasion” of private property resulting from government activity amounts to an appropriation. Id The line distinguishing potential physical takings from possible torts is drawn by a two-part inquiry. First, a property loss compensable as a taking only results when the government intends to invade a protected property interest or the asserted invasion is the “direct, natural, or probable result of an authorized activity and not the incidental or consequential injury inflicted by the action.”
Columbia Basin Orchard v. United States,
Here, since Ridge Line does not allege that the government intentionally appropriated its property, on remand the court must first determine whether Ridge Line proved that the increased storm runoff was the direct, natural, or probable result of the Postal Service development, rather than merely an incidental or consequential injury, perhaps compensable as a tort, caused, for example, by improvident conduct on the part of the government in managing its property. Specifically, the court must determine whether the increased runoff on the claimants property was the predictable result of the government action.
See Sanguinetti v. United States,
*1357 If engineers had studied the question in advance they would, we suppose, have predicted what occurred. If they had studied the question in advance and had said, in a report, “If you build Parker Dam to a crest of 450.4 feet, the pool will cover the land described below. The effect of the flow of the river into the pool will be to form a delta which, within approximately three years will raise the bed and the surface of the river, will cause it to overflow its banks and will thus inundate the lands described below,” would the fact of that formal forewarning be a decisive fact in such a suit as this? Should the fact that the engineering study was not so complete as to include a prediction as to lands beyond the bed of the reservoir prevent a court from looking at the actual and natural consequences of the Government’s act?
Id. at 233-34.
B.
The second prong of the taking-tort inquiry in this case requires the court to consider whether the government’s interference with any property rights of Ridge Line was substantial and frequent enough to risе to the level of a taking.
See BMR Gold,
V.
If the court concludes that treatment of the government’s conduct as a potential taking, as opposed to a tort, is appropriate, it must then consider whether the government aрpropriated from Ridge Line a legally protectable easement interest, a determination made in this case according to West Virginia’s “reasonable use” rule. In deciding whether one who alters his land is liable to his neighbor for flooding caused by the alterations, the Supreme Court of Appeals of West Virginia decided to “approach[] each case on its individual facts with a view toward finding if a reasonable use was being made of the property.”
Morris Assocs., Inc. v. Priddy,
Generally, under the rule of reasonable use, the landowner, in dealing with surface water, is entitled to take only such steps as are reasonable, in light of all the circumstances of relative advantage to the actor and disadvantage to the adjoining landowners, as well as social utility. Ordinarily, the determination of such reasonableness is regarded as involving factual issues to be determined by the trier.
Id.
at 773 (citing
Page Motor Co., Inc. v. Baker,
altering the natural flow or drainage of surface water upon one’s land such that the water causes damage to another party is not “reasonable” merely because *1358 the person altering the flow of water sought to protect his or her own рroperty and did not intend to harm any other party.
Whorton v. Malone,
Here, the government effectively shifted some of its storm water control costs to Ridge Line. By covering much of its land with impervious surfaces but failing to build water retention facilities, the government, according to Ridge Line’s evidence, forced Ridge Line to build larger, more expensive control facilities in South Hollow than would otherwise have been necessary.
There was also evidence that the government aggravated the consequences that would otherwise have befallen Ridge Line as a result of the Postal Service development by gathering and concentrating much of the storm water that fell on its property into five discharge points directed onto Ridge Line’s property. This multiplied its erosive power, rather than restraining it. Furthermore, Ridge Line offered evidence that the government failed to maintain the check dam it built (with consent) on Ridge Line’s property, despite the request of the West Virginia Division of Environmental Protection that the dam although intended to be temporary remain permanently and be maintained. On remand, the trial court must consider this and other evidence bearing on the reasonableness of the government’s actions (and inaction) in order to decide whether Ridge Line has been deprived of a cognizable property interest.
VI.
To summarize, in the present case, as noted above, the trial court did not address Ridge Line’s inverse condemnation contention, and, therefore, did not evaluate whether the government’s construction led predictably to Ridge Line’s economic injury and was sufficiently substantial. On remand, it must do so. If the court concludes that consideration as a potential taking is prоper, it must then address whether the steps taken by the government in storm water retention and the amount that nevertheless invaded South Hollow were reasonable under West Virginia law, including an assessment of the relative advantage to the Postal Service and disadvantage to Ridge Line in view of the increased storm water runoff and the relative social utility of the Postal Service facility.
See Page Motor,
We thus vacate the trial court’s judgment that no taking occurred. We hold that Ridge Line’s property need not suffer an effectual destruction or a permanent and exclusive occupation by government runoff for a taking claim based on a flow-age easement. However, whether there is a compensable taking in this case depends first on whether its loss may properly be analyzed under takings law as opposed to tort law, and then on whether Ridge Line has a protectable property interest under West Virginia property law that has been violated by government action.
In the event that the court determines on remand that Ridge Line has a protectable property interest and that the increased storm water flowage onto Ridge
*1359
Line’s property constituted a taking of an easement in violation of that property interest, damages may be assessed based on Ridge Line’s сost in constructing prudent flood control measures.
See Dickinson,
Alternatively, the court may determine damages based on the price the government has paid for flowage easements in comparable situations. Moreover, “just compensation” includes a recovery for “all damages, past, present and prospective.”
Dickinson,
CONCLUSION
For the reasons set forth above, we vacate the trial court’s judgment for the government and remand for further analysis consistent with this opinion. On remand, the trial court need not reopen the record, unless necessary to address the issues raised above. Accordingly, the judgment of the trial court is
VACATED AND REMANDED.
COSTS
No costs.
Notes
. The trial was held in Charleston, West Virginia on July 15-17, 2002. The trial court heard the parties' closing statements on August 13, 2002 in Washington, D.C. and issued its opinion and order on September 4, 2002. On October 8, 2002 the trial court denied Ridge Line's motion for reconsideration.
. During discussions with counsel following the close of Ridge Line's case, the court observed that Dickinson was "remarkably similar in some respects” to the present case (Trial Transcript, at 406-07) and noted that Dickinson provides "support for the notion that there are other ways that you can value a taking” — namely "using the cost of these improvements” (id. at 415). In response, the government incorrectly distinguished Dickinson as applicable only where an appraisal establishes that the government’s actions resulted in a diminution in value (id. at 407-08) and failed to specifically address the court’s observation about Dickinson's approval of damages based on the cost of measures taken to prevent erosion (id. at 416). The government, which abandoned its statute of limitations argument on appeal, apparently persists in its narrow view of Dickinson, as its brief does not mention the decision.
. Ridge Line apparently did not cite Nollan until it filed its motion for reconsideration.
. In Cotton Land, water impounded in the reservoir created by the dam backed up into the feeding river, which, having lost its velocity at its junction with the reservoir, deposited its sand where it collided with the still water; the deposit of the sand placed another obstacle to the full and rapid flow of the river; this filling up of the bed of the river raised the level of its water; it over *1357 flowed its banks, they being low, and spread out over the company’s land, it being still lower.
Cotton Land,
