Opinion issued March 7, 2013.

In The

Court of Appeals 

For The 

First District of Texas 

————————————

NO. 01-11-00014-CV

———————————

HARRIS COUNTY FLOOD CONTROL DISTRICT AND HARRIS 

COUNTY, TEXAS, Appellants

V.

EDWARD A. AND NORMA KERR, PATTIE ACKERMNANN AND LEDA 

KROLCZYK, DAVID T. ADAMS, CLIFFORD AHLHORN, 

INDIVIDUALLY AND AS ADMINISTRATOR OF THE ESTATE OF 

MARGRETE AHLHORN, THE ESTATE OF MARGRETE AHLHORN, 

THOMAS E. ALVAREZ, B.J. AND CLAUDENCE ANELLO, PAUL C. 

ARDOIN, JR., RONALD L. AND WENDY M. BARR, DONALD H. AND 

CYNTHIA L. BECK, OKIE BECK, STEVE AND LINDA BEVERLIN, 

DOUGLAS J. AND NANCY K. BLACK, LEROY AND MARY BOLLOM, 

STANLEY AND CATHY BORDOVSKY, LORI KRAFT BORQUE, 

WENDELL W. BREAZEALE, MICHAEL R. AND DIANA L. 

BRINKMEYER, MARK A. AND LEAH BRUMLOW, MICHAEL AND 

JUDY BRUNER, MICHAEL AND CYNTHIA BUCHANAN, JOSEPH AND 

FAYE BUFFALO, WILLIAM AND SHIRLEY CANNAVINO, RUSSELL D. 

AND LYNN CARLSON, JAMES J. AND CONNIE J. CASSENS, JAMES J. 

CHRISTY, CARL W. CLARK, SUSAN CLARK, MICHAEL AND 
SUZANNE CLAXTON, RONNIE D. AND JUDY A. COCKMAN, LARRY 

AND MARY CRAWFORD, ANTONIO AND NILDA CUELLAR, JOLIE 

DANIEL, WILLIAM P. AND SUE E. DAY, SUSAN JANE DEESLIE, 

DUANE E. DEGNER, DAVID DICK, JACKIE L. AND LILLIAN L. 

DILLON, KEVIN AND ELIZABETH DOMAIN, MARVIN J. AND 

PAMELA A. DRODDY, JOHN AND BETTY ELLIS, KEITH AND HOLLY 

ENGLE, NICKOLAS AND HUGHLEENE S. ERDELY, PATSY A. 

EUBANKS, MIKE EVANS, FAIRBANKS ANIMAL CLINIC INC., 

DOUGLAS L. AND DEBRA G. FARES, DONNA FARRAR-WILSON 

FORMERLY KNOWN AS DONNA FARRAR, BRANDON FOKKEN, 

MARLOWE A. AND MARY M. FOKKEN, DAVID M. AND DEBBIE 

FOYT, RICHARD AND TERRI FRITSCHE, SHIRLEY GALIK, PHYLLIS 

J. GAMBLE, ARMANDO AND LUCIA GARCIA, ROBERT D. AND 

JOVITA GARCIA, STEPHEN B. AND BRENDA GARNEY, ARTHUR AND 

KATHERINE PINTSCH JR. AS EXECUTORS OF THE ESTATE OF 

NORMAN K. AND LYNDA GARRISON, PAUL D. GERKE, STEPHANIE 

K. GERKE – YOUNG, TIMOTHY K. AND DEBORAH K. GLAVIN,

HORACE DEAN AND JANICE M. GOLDEN, MICHAEL AND JENNIFER 

L. GONZALEZ, RAY A. AND RITA R. GONZALES, MARK AND 

JENNIFER GOODRUM, MIKE AND BRENDA GORSKI, JERRY AND 

LINDA GRAGG, ROGER D. AND DEBORAH GREER, LULENE GREGG, 

LANCE W. GREMILLION, SHARON GREMILLION, JOE EMENS 

GUZMAN, LAMAR AND MARY ANN HAAS, LEO H. AND CATHERINE 

HAAS, JR., DAVID AND LISA HALL, JAMES L. HALL, MICHAEL D.

AND KIMBERLY Y. HANEY, LYNN HANSEN FORMERLY KNOWN AS 

LYNN HANSON, TERRY D. HARGRAVE, LONNIE AND JO A. 

HARRISON, RALEIGH L. AND CHARLOTTE HARVEY, JANICE L. 

HAYS, RICHARD LLOYD HAZEL, RICHARD A. AND BETTY J. 

HEATHCOTT, ALICE K. HEDSTROM, DARLA HENRY, STEVE HENRY, 

STEVEN J. AND MARIE A. HENRY, CAROL HILMERS, LONNIE E. AND 

CHERYL A. HOOD, DANIEL AND ALISON HORSTMAN, ROBERT M. 

HUBBARD, GARY AND BECKY HUDDLESTON, LYNN M. HUMMEL 

FORMERLY KNOWN AS LYNN MARIE BREAZEALE, CHERYL JACKS 

FORMERLY KNOWN AS CHERYL SMITH, WANDA L. JACKSON, 

CATHERINE L. JOHNSON, INDIVIDUALLY AND AS 
ADMINISTRATRIX OF THE ESTATE OF GEORGE E. JOHNSON, 

DANIEL AND PAMELLA JONES, MAX AND CONNIE JONES, MICKEY 

W. AND VIRGINIA KEELING, ALOIS AND KAREN KEILERS, TITUS L. 

AND DONNA HOFFMAN KELLEY, CHARLOTTE SUSAN KERR, DAVID 

B. AND DENISE M. KIRBY, RAMANATH AND JAYANTHI KONGOVI, 

CORINE L. KONVICKA, LILLIAN M. KROLCZYK, PAUL AND JANIS 

KUBECZKA, BERTHOLD G. AND MICHELE LAKADOSCH, LILLIAN 

M. AND GEORGE W. LANG II, WALTER D. LATHAM, INDIVIDUALLY 

AND AS ADMINISTRATOR OF THE ESTATE OF LINDA D. LATHAM, 

JOHN S. AND NANCY L. LEATHERMAN, VERNON R. AND JO ANN 

LEHDE, BARTLEY A. AND KARLA K. LEWIS, NORMAN J. AND 

MARTHA A. LOCASCIO, LOWELL R. AND JUDITH A. LOCKE, CAROL 

HOHL AS ADMINISTRATOR OF THE ESTATE OF HERMINE LUECKE, 

THE ESTATE OF HERMINE LUECKE C/O CAROL HOHLE, 

ADMINISTRATRIX, WAYNE D. AND ALLYSON LYNN, ELIZABETH 

MALEK, DON P. MANIHA, FRANK J. AND MADYLENE MARINO, 

JASON AND RENE R. MASS, BARBARA J. MATTHEWS, JOE G. 

MCCOURT, LEE G. AND MARIAN MCDANIEL, PATRICK J. AND SUE 

MCDERMOTT, THOMAS F. AND DENISE C. MCNEILLY, E.L. AND 

PEGGY L. MCSHAN, JR., ANTONIO AND GUADALUPE MEDRANO, 

JOE AND GLORIA MEJIA, DANIEL AND DORRAINE MELCHER, 

BENNIE AND LINDA MELESKI, ROBERT L. MIDKIFF, J.T. MILLS, 

ADOLPH AND THERESA MOCK, DAMASO C. AND EDITH MOJICA, 

CHARLES A. AND LIH-SHIANG C. MONTEITH, DAVID A. AND 

SHIRLEY MONTGOMERY, JOE AND DENISE MONTGOMERY, JOHN 

T. AND KITTY MONTGOMERY, DAVID N. MOORE, AGNES A. 

MURPHREE, LOI VAN AND NHAN K. NGUYEN, BRAD P. NIXON, 

DAVID J. AND DONNIE B. NOLL, DAVID A. AND JENNIFER NOWAK, 

FRED A. AND CAROLYN M. GARTMAN O’BANNION, KENNETH E. 

AND CECILIA O’BANNION, MICHAEL W. AND DIANE O’CONNOR, 

JANICE O’KEEFFE, LOUIS AND JOANNA ORLANDO, PETER B. AND 

PATRICIA PEDERSEN, RALPH D. AND PATRICIA A. PEREZ, 

CLARENCE AND JONCIA PERRY, JOHN AND RUTH PETTIJOHN, 

GERARD PICCOLO, KATHERINE PICCOLO, MICHAEL AND 

VIRGINIA PLOCH, LEONARD AND PATTIE L. PYLE, PAUL S. QUIN, 
AYOUB AND FARIDEH ABDOLHAMID RAZMANDI, MEHDI AND 

MARY RUTH RAZMANDI, BARBARA J. READY, WELDON AND 

NORMA REED, MARC S. AND CAROL RENDALL, JOHN L. AND 

GLORIA A. RILEY, LARRY AND JANIE ROCKETT, JOE E. AND 

JULIET RODRIGUEZ, MARIO A. AND CONSUELO RODRIGUEZ, 

ROBERT L. AND BARBARA M. ROHDE, RICHARD ROHN, STEPHANIE 

RUSH, RANDY AND CINDY M. SARTAIN, JAMES E. AND NANCY C. 

SAVOIE, CHRIS SCHILLING, JAMES L. AND VICTORIA R. SHERWIN, 

MAY L. SIMPSON, INDIVIDUALLY AND AS ADMINISTRATRIX OF 

THE ESTATE OF ERNEST L. SIMPSON, CRAIG D. AND MARY 

SLOVAK, CHRISTOPHER A. AND DOROTHY ANNETTE SMALL, 

SHARYN M. SMITH, SHELLY D. SMITH, DANNY J. AND CHARLOTTE 

J. SRALLA, DANA G. AND MARGARET A. STREBECK, JAMES AND 

DONNA TESSMER, KATHLEEN THERIALT, DAVID M. THOMPSON, 

DAVID AND MARCIA TIJERINA, ZACHARY W. TOLSON, CARL AND 

PATTI TORREGROSSA, BOBBY L. AND JANET UNDERWOOD, BETTY 

VARNER, ALBERT AND MARGARET VASQUEZ, CHARLES L. AND 

JANET C. VAVRICKA, VICKI VIDES, DAVID R. AND SHIRLEY J. 

WAGNER, LYDIA A. WALDEN, JERRY AND SUE WALTON, LARRY J. 

AND NORMA M. WASHINGTON, BRENT WESTON AND KAREN 

RENEE MCDOWELL, NED E. AND CONNIE WHITTON, BRIAN AND 

CAROLYN L. WILLIAMS, THOMAS P. AND DOROTHY W. 

WILLIAMSON, DANE WILSON, ETHEL MAY WILSON, LINDA 

WILSON RUMFOLO FORMERLY LINDA WILSON, ANDREA R. 

WINTER, MARIA T. DE LA FUENTE AND JUDITH A. WOOD, LLOYD C. 

AND SHELIA D. WOOD, WENDELL R. AND SHEILA WYBORNY, 

GARRY L. AND MYRIAM L. ZALESKY, AND DARRELL D. AND 

ANGELA R. ZWINK, Appellees

On Appeal from the County Civil Court at Law No. 1 

Harris County, Texas

Trial Court Case No. 837329
5

DISSENTING AND CONCURRING OPINION

I concur in the Court’s opinion with respect to the claims against Harris 

County. But I dissent from the Court’s opinion with respect to the Harris County 

Flood Control District. Because the District has conclusively disproven the intent 

necessary to a takings claim (and a nuisance claim)—the only basis for waiver of 

governmental immunity asserted here—I would dismiss the claims against the 

District for lack of subject-matter jurisdiction.

Factual Background

Edward and Norma Kerr, together with approximately 400 other plaintiffs 

with homes in the upper White Oak Bayou area of northwestern Harris County, 

sued Harris County and the District (collectively, the Harris County entities) 

alleging that their homes flooded during storms in 1998, 2001, and 2002 because 

of the Harris County entities’ activities within the White Oak Bayou watershed. 

White Oak Bayou is a watershed of over 110 square miles that has long been 

identified as a high-risk area for flooding by the Federal Emergency Management 

Agency. According to FEMA’s 1976 flood maps, most of the homeowners’ 

properties were not located in the 100-year floodplain at the time of their 

construction in the mid-to-late 1970s and early 1980s. The homeowners asserted 

inverse condemnation and nuisance claims against the Harris County entities for 

“taking” their property without adequate compensation.
6

The District is a legislatively created special district, charged with “the 

control . . . of the storm and flood waters, and the waters of the rivers and streams 

in Harris County and their tributaries for ‘flood control . . . and other useful 

purposes.’” Act of May 10, 1937, 45th Leg., R.S., ch. 360, § 1, 1937 TEX. GEN. 

LAWS 714 (as amended). It is responsible for designing, building, and maintaining 

flood-control projects and infrastructure which are intend to reduce the risk of—

but cannot always prevent—flooding. The importance of the District’s work is 

underscored by the fact that much of Harris County has been, and for the 

foreseeable future will continue to be, at risk for flooding during severe storms.

This risk exists because flooding is inevitable when rainfall levels reach a certain 

number. The storm sewers cannot handle the rainfall, causing the storm water to 

pond and secondary drainage systems to surcharge.

In the early 1960s, almost 11 miles of White Oak Bayou were enlarged and 

lined with concrete by the Army Corps of Engineers. Flood control in the area was 

initially handled according to a 1965 study by Turner Collie & Braden, which 

called for the construction of drainage facilities throughout the watershed, storm 

sewers, drainage ditches, and other improvements to the bayou. At that time, the 

Harris County entities believed the bayou had sufficient capacity to accept runoff

from planned development, making onsite detention facilities unnecessary. 
7

The first detailed flood-insurance map was produced by the Army Corps in 

1976. On that map, nearly all of the homeowners’ homes were built above the 100-

year floodplain. The Corps completed its “Interim Report on Upper White Oak 

Bayou” the same year, concluding that the flooding problems there were “caused 

primarily by inadequate channel capacities of the streams.” The report observed 

that the flooding was “compounded by continuing urbanization which increases 

and accelerates the runoff from rainfall,” and recommended a number of 

improvements that focused primarily on channel enlargement and rectification of 

the lower bayou at a federal cost of about $50 million and a local cost of about $7 

million. According to the final report, the District and the Harris County 

Commissioners Court “expressed favorable comments concerning the proposed 

project and have agreed to provide the necessary items of local cooperation.” The 

Corps, however, did not authorize any federal funding for construction. 

In 1980, the District, as the local sponsor of federal flood-control projects,

stated its objective to construct and maintain facilities “intended to minimize the 

threat of flooding.” The District stated that its objective could be best met in the 

long-term by “a continued program of improvement and extension of the District’s 

open channels.” However, the curtailment of federal funding had slowed open 

channel improvements, and as a result, the District recommended that its approval 

policy for new construction projects be modified to adopt “appropriate criteria for 
8

covering the design of supplemental storm water systems.” In additions to its 

concerns about the lack of federal funding, the District also questioned whether the

Corps’ information and methodology were outdated. Out of these concerns, the 

District hired two engineering firms―Turner Collie & Braden and Pate 

Engineers―to update the computer models and develop a new method for

determining rainfall/runoff characteristics and flooding. The Pate Plan was the 

result of this effort. 

The purpose of the Pate Plan was to “to alleviate flooding from the 100-year 

storm event along White Oak Bayou and allow full development of the watershed”

and to ensure that “new land developments [did] not increase the flooding potential 

for other properties in the watershed.” The Pate Plan was to be funded by “District 

resources,” contributions by municipal utility districts, and a $3,000 per acre 

impact fee imposed on private developers for properties of less than ten acres. The

Pate Plan had five components, including three regional storm-water-detention 

facilities and earthen channel improvements. Two of the stated purposes of the 

regional facilities were to: (1) “reduce existing flood levels while not allowing 

flood level increases from new developments” and the proliferation of small 

detention basins on each development; and (2) collectively fund and install 

regional basins, which are more effective and reliable. The total cost for the final 

improvements would be more than $66 million. Because the funds were not 
9

immediately available, however, the Pate Plan recommended a series of interim 

measures to address flooding at a cost of $25 million. That recommendation was 

based on the assumption that 2,500 acres of new development would occur and 

help fund the project. The County adopted the Pate Plan and authorized the District 

to commence work implementing it in 1984.

After a downturn in the economy stalled the anticipated funding, Pate 

Engineers conducted an interim study “to define an initial channel improvement 

project to eliminate existing flooding upstream of the existing concrete lined 

channel.” This 1985 study included the design of the initial project and the

establishment of rights-of-way where the planned improvements were to be 

constructed. Land acquisition began the next year, and construction on the first 

detention facility began in 1988. The District acknowledged in correspondence 

with the Corps that the District would lose federal participation in the project by 

moving forward with its own plan; nevertheless, the District remained committed 

to constructing the first phase of the Pate Plan because “timely implementation of 

the regional project [was] critical.” 

In 1989, the Pate Plan had not been fully implemented and severe storms 

resulted in the flooding of over 200 homes near White Oak Bayou. In response to a 

homeowner complaint, the District responded that it was “very aware of the house 

flooding potential” in some subdivisions along White Oak Bayou. To “greatly 
10

reduce” this risk, the District was “in the process of implementing the initial 

phase” of the Pate Plan and had already purchased regional detention sites, 

adjusted bridges, and approved construction plans but was awaiting the 

condemnation of various rights-of-way. The District anticipated this work would 

be completed in the near future, allowing it to seek construction bids for “the first 

channel rectification segment.” 

In 1990, the District ordered a new study of the White Oak Bayou by Klotz 

Associates. The reason for the new study is disputed. The District asserts that the 

1989 flooding caused the District to reevaluate the Pate Plan. According to its 

director, Michael Talbott, the 1989 flood revealed that the engineering model used 

to develop the Pate Plan “was not accurate. The computer model failed to predict 

unexpected flooding in lower White Oak Bayou and the District was forced to 

reevaluate the underlying premises of the Pate [P]lan.” The homeowners assert—

but did not prove—that the new study was conducted to avoid a tax rate increase.1

 1 According to the deposition testimony of Art Storey, the District’s executive 

director, the tax rate at that time was five cents per hundred dollars of assessed 

valuation. Storey testified that he was informally asked by some commissioners 

for his opinion on the tax rate and that he recommended raising it above 5 cents. 

Storey testified that he “initially identified requirements that could have cost as 

much as 10 cents” and that he was successful in getting the rate raised but not to 

that level. He also testified that, as “[t]imes started to improve,” there was 

agreement regarding a lower rate. The homeowners did not present any evidence 

that Klotz was instructed to develop a less expensive alternative to the Pate Plan or 

what programs, if any, were part of Storey’s “initial requirements” that were not 

implemented because of the lower tax rate. 
11

Klotz Associates determined that the Plate Plan “need[ed] to be modified to 

provide even more protection” because the flood flows and levels were higher than 

those shown in the Pate Plan. Klotz recommended two earthen channel 

improvements and a detention storage facility, which would have “eliminated most 

of the flooding” in one of the nine subdivisions where the homeowners’ properties

are located. Klotz completed a first report in 1992 in which it updated the 

conditions existing at the time. After reworking the computer model and applying

more advanced computer software, Klotz determined that there were “significantly 

higher flows and flood levels than in” the previous flood-hazard survey. 

The parties dispute the effectiveness of the Klotz Plan. Talbott stated in his 

affidavit that Klotz’s “multistage study” recommended a regional flood-control 

plan, including some features that “could be implemented over a shorter-term 

horizon than the original [Pate] [P]lan. The features of that near-term plan . . .

[were] similar to but more extensive than the . . . Pate Plan.” The Klotz Plan also 

called for the District to require on-site detention for future development. The 

homeowners in their brief describe the Klotz Plan as “less effective,” “downsized,” 

and a “reduced mitigation plan” because it implemented only a portion of the 
12

channel improvements in the Pate Plan and did not protect against 100-year 

floods.

2

Construction began on another detention facility that was not part of the Pate 

Plan but was recommended by Klotz. Over the course of the next several years, the 

District continued construction and acquired additional land for the project. Klotz 

submitted a “Final Recommended Plan for White Oak Bayou” in April 1998, 

which the District submitted to FEMA. Tropical Storm Frances—the storm that 

first lead to the homeowners’ claims—occurred five months later. FEMA produced 

new floodplain maps in 1999. On those maps, the homeowners’ houses were 

located in the 100-year floodplain.

The homeowners’ properties experienced flooding during Tropical Storm 

Frances and two later storm events, Tropical Storm Allison in June 2001 and an 

unnamed storm in October 2002. According to Andrew Yung, an expert for the 

District, Tropical Storm Frances saw average rainfall in the Upper White Oak 

Bayou watershed between a 50- and 100-year frequency and a rainfall of “greater 

than a 100-year event in the immediate vicinity of the Plaintiffs’ homes.” Steve 

Fitzgerald, the District’s chief engineer, also stated that Tropical Storm Frances

“was an unprecedented storm that produced extremely heavy rainfall.” The 

 2 The homeowners’ record citations indicate that the Klotz Plan stated it used the 

10-year frequency plan for its analysis. That plan is not in the record. 
13

homeowners’ expert, Larry Mays, stated that Tropical Storm Frances resulted in 

flooding approximating a 10-year event. With respect to Tropical Storm Allison, 

Young stated that it brought rainfall greater than a 100-year frequency; Mays, in 

contrast, opined that it was a 50-year event. The third storm did not exceed a 100-

year storm, but was still a serious and unusual storm. According to Yung, it 

brought rainfall between a 25-year and a 50-year storm event; according to Mays,

it was a 10-year event.

Pertinent Procedural Background

The homeowners brought takings and nuisance claims against the Harris 

County entities. Their claims focus on three acts: (1) the approval of upstream 

development, (2) the failure to complete the Pate Plan, and (3) the construction of a 

transitional flood-control structure (i.e., a dam).

The Harris County entities challenged each of these claims in a combined 

plea to the jurisdiction and motion for summary judgment. The plea was supported 

by affidavits from Talbott and Melvin Spinks, P.E., an expert in water resources 

engineering and civil engineering. As stated by Talbott, the District did not 

proceed with the Pate Plan because the 1989 flooding demonstrated that the Pate 

Plan “was based upon faulty information and would not have worked.” Talbott 

averred that the Klotz studies in the 1990s—which were before the second and 

third storms at issue here—developed a new model that was “more sensitive to 
14

observed storm events and additional factors not contained in the [earlier] 

computer model.” Talbott further stated that the earlier model was based upon 

certain federal policy decisions that required the exclusion of data regarding “a 

substantial amount of” development at the time. The District approved the Klotz 

Plan based on the engineers’ certification that the project complied with applicable 

regulations and would not increase downstream runoff. The revisions to the Pate 

Plan resulted in improvements to alleviate flooding, which “greatly exceeded the 

work called for in the original Pate Plan,” and additional design and construction 

work. At the time of its plea, the District had spent over $70 million improving the 

bayou, including the completion of ten regional detention facilities and the 

purchase of land for ten more. 

The homeowners’ response included an affidavit and reports from their 

expert Mays, a professor of civil and environmental engineering at Arizona State 

University. Mays stated in his report that the failure to implement the Pate Plan

“for the segment of White Oak Bayou adjacent” to the homeowners’ properties and 

approval of “thousands of additional acres of development . . . without proper 

stormwater management measures” caused the 1989 flooding of the homeowners’ 

properties. In his affidavit, Mays averred that the Harris County entities approved 

development upstream of the homeowners’ properties knowing that (1) 

development causes increased runoff downstream, (2) insufficient capacity existed 
15

in the bayou adjacent to the approved upstream development to handle the

increased runoff, and (3) the developers of the upstream area had not provided 

sufficient mitigation for the increased runoff. He further stated that the flooding 

from the three storms resulted from the approval of the upstream development and 

the failure to implement the entire Pate Plan, not unprecedented rainfall or 

inadequate local drainage systems within the subdivisions. 

More specifically, Mays stated that only three of the Pate Plan’s five 

components were implemented, leaving portions of the work that “would have 

alleviated” flooding of the homeowners’ properties unfinished. Mays averred that 

the full implementation of the Pate Plan would have mitigated the adverse impact 

from upstream development along White Oak Bayou, but the District chose not to 

implement the phase of the Pate Plan that “would have prevented flooding of [the 

homeowners’ properties] up to and including a 100-year flood event.” Mays 

further stated that Klotz had to revise the models developed for the Pate Plan 

because the District permitted additional land development without adequate 

storm-water-runoff mitigation. Finally, based on the Corps’ 1976 study, Mays

stated that the Harris County entities knew that approving “unmitigated upstream 

development . . . would be substantially certain to result in increased flooding 

along the bayou in the vicinity of the [homeowners’] properties.”
16

The trial court denied the Harris County entities’ motion and they appealed, 

challenging all three bases for the homeowners’ claims. The homeowners do not 

contend on appeal that the construction of the dam increased flooding on their 

property or amounted to a taking of their property.

Immunity

The Harris County entities have governmental immunity. Governmental 

immunity includes two distinct principles: immunity from suit and immunity from 

liability. See Tex. Dep't of Parks & Wildlife v. Miranda, 133 S.W.3d 217, 224 

(Tex. 2004). While immunity from liability is an affirmative defense, immunity 

from suit deprives a court of subject-matter jurisdiction. See id. The Harris County 

entities’ governmental immunity deprives the trial court of subject-matter 

jurisdiction over this action absent a proper waiver of immunity. See id.; Tex. 

Dep’t of Transp. v. Jones, 8 S.W.3d 636, 638 (Tex. 1999). Governmental 

immunity is waived for constitutional takings claims. See TEX. CONST. art. I, § 

17; Gen. Servs. Comm’n v. Little–Tex Insulation Co., Inc., 39 S.W.3d 591, 598 

(Tex. 2001). 

Although the homeowners assert both a takings claim and a nuisance claim, 

they rely exclusively on their constitutional takings claim to establish a waiver of 

the Harris County entities’ immunity from suit. The trial court’s subject-matter 

jurisdiction over this suit is therefore contingent on the jurisdictional requisites of a 
17

takings claim, whether asserted as a traditional takings claim or as a nuisance claim 

that “rises to the level of a constitutional taking under Article I, Section 17.” See 

City of Dallas v. Jennings, 142 S.W.3d 310, 312 (Tex. 2004) (holding that city 

retained immunity from nuisance claim because plaintiffs did not establish 

constitutional taking and did not assert separate waiver of immunity for nuisance 

claim). Thus, if either of the Harris County entities has disproved a jurisdictional 

requisite of a takings claim, this Court must dismiss this action—including both the 

homeowners’ takings claim and their nuisance claim—with respect to that 

defendant. See, e.g., Hearts Bluff Game Ranch, Inc. v. State, 381 S.W.3d 468, 491

(Tex. 2012) (dismissing action for want of subject-matter jurisdiction because 

claimant could not establish a viable takings claim); Gulf Coast Waste Disposal 

Auth. v. Four Seasons Equip., Inc., 321 S.W.3d 168, 175–76 (Tex. App.—Houston 

[1st Dist.] 2010, no pet.) (dismissing takings claim when evidence negated intent 

element and, regarding takings claim, observing that “the government retains 

immunity absent intentional conduct”). This is true regardless of whether the issue 

was raised in the Harris County entities’ plea to the jurisdiction or their motion for 

summary judgment. See, e.g., City of Denton v. Paper, 376 S.W.3d 762, 764 (Tex. 

2012) (dismissing suit on immunity grounds in interlocutory appeal from denial of 

summary judgment); Miranda, 133 S.W.3d at 234 (dismissing suit on immunity 

grounds in appeal from denial of plea to jurisdiction).
18

Intent

To recover on a takings claim under Article I, Section 17 of the Texas 

Constitution, a property owner must establish that the governmental entity: (1) 

engaged in a specific act causing the taking, damaging, or destroying of private 

property; (2) engaged in the act intentionally, i.e., either knowing that the specific 

act was causing identifiable harm or knowing that specific property damage is 

substantially certain to result; and (3) took the property for a public use. See Sw. 

Bell Tel., L.P. v. Harris Cnty., 267 S.W.3d 490, 495 (Tex. App.—Houston [14th 

Dist.] 2008, no pet.). Thus, in a takings claim, the plaintiff must prove intent, 

causation, and public use. See City of San Antonio v. Pollock, 284 S.W.3d 809, 812

(Tex. 2009) (dismissing takings and nuisance claims due to lack of evidence that 

city knew its actions were substantially certain to cause harm); City of Keller v. 

Wilson, 168 S.W.3d 802, 808 (Tex. 2005) (holding that intent element requires 

proof that governmental entity (1) knows that specific act is causing identifiable 

harm and intends that harm or (2) knows that specific property damage is 

substantially certain to result from authorized government action); Tarrant Reg’l 

Water Dist. v. Gragg, 151 S.W.3d 546, 554 (Tex. 2004) (affirming jury verdict for 

landowner whose property was repeatedly flooded after upstream construction of 

water-supply reservoir); Jennings, 142 S.W.3d at 312 (dismissing takings and 
19

nuisance claims because there was no evidence that city knew plaintiffs’ home 

would be damaged or that damage was substantially certain).

To prevail on the intent element, it is not enough for the homeowners to 

show that the acts themselves were intentional. Jennings, 142 S.W.3d at 313.

Rather, the homeowners must prove that the Harris County entities “knew (not 

should have known) that flooding was substantially certain.” City of Keller, 

168 S.W.3d at 829. The governmental entity’s “intent” must be established under a 

“heightened intent standard.” City of Arlington v. State Farm Lloyds, 145 S.W.3d 

165, 168 (Tex. 2004). “Substantially certain” does not mean flooding is possible, at 

increased risk, or even more likely than not. See Pollock, 284 S.W.3d at 821 (“The 

governmental entity’s awareness of the mere possibility of damage is no evidence 

of intent”); Gulf Coast Waste Disposal Auth., 321 S.W.3d at 175 (holding that 

“allegations demonstrat[ing] awareness . . . that an increased risk existed” did not 

satisfy “necessarily incident to or a consequential result of” intent standard in 

takings case). A government entity has knowledge that flooding is substantially 

certain to occur “only when the damage is ‘necessarily an incident to, or 

necessarily a consequential result of the [entity’s] action.’” Pollock, 284 S.W.3d at 

821 (quoting Jennings, 142 S.W.3d at 314). 

There is also a temporal component of intent: “the government’s knowledge 

must be determined as of the time it acted, not with benefit of hindsight.” Id. at
20

821. The homeowners’ burden includes producing “evidence of ‘objective indicia 

of intent’ showing the [Harris County entities] knew identifiable harm was 

occurring or substantially certain to result” from their actions. City of Keller, 168 

S.W.3d at 830. In evaluating the objective evidence of a governmental entity’s 

intent, a court should evaluate any evidence regarding what the entity was told 

about the consequences of its actions. Id. at 829. 

A. The District disproved the necessary intent for a takings claim

The homeowners contend that the Harris County entities did not present 

admissible evidence negating the intent element of the takings claim. More 

specifically, the homeowners contend that Talbott’s affidavit regarding intent is 

conclusory and only relates to the District, not the County. Alternatively, the 

homeowners contend that they presented sufficient contrary evidence to raise an 

issue of fact with respect to intent.

1. Talbott’s affidavit did not establish the County’s lack of intent

The homeowners are correct that Talbott’s twenty-three-page affidavit does 

not address the County’s intent; it addresses only the District’s intent. The County

therefore did not satisfy its burden to establish that it lacked the requisite intent, the 

homeowners did not have to produce any evidence to raise a fact issue as to intent,3

 3 The County relied on Talbott’s affidavit but his affidavit does not address the 

County’s intent nor does it show how he would know the County’s intent. 
21

and the trial court’s summary judgment in favor of the County cannot be affirmed 

on this ground. I therefore concur with the Court’s disposition of the homeowners’ 

claims against the County.

2. Talbott’s affidavit did establish the District’s lack of intent

Talbott’s affidavit established the District’s lack of intent. Talbott, a licensed 

civil engineer and hydrologist, began working for the District as a floodplain 

hydrologist and was steadily promoted until he reached his current position as 

director. Talbott detailed the District’s attempts to reduce the risk of flooding in 

Harris County and categorically stated that the District knew only of the general 

possibility of flooding (which he described as “a flooding risk”), but did not know 

that its specific actions would cause flooding. He stated that to intentionally cause 

flooding would be “contrary to the [District’s] fundamental reason for existence 

and its policies and values.” Regarding the area in question, Talbott averred that 

the District’s goal for the past twenty-four years has been to implement a regional 

flood-damage-reduction plan for White Oak Bayou, and the District has “greatly 

exceeded the work that was originally called for in the 1984 Pate Plan and has 

spent more than $70 million” on studies and construction “to decrease the risk of 

flooding along White Oak Bayou.” He described in detail aspects of the District’s 

work in White Oak Bayou. He further stated, “I can say without reservation that 

the District did not intentionally cause flooding of Plaintiffs’ properties” and that 
22

the District’s work was not “performed with substantial certainty that such work 

would cause the flooding of Plaintiffs’ properties or that flooding would be 

necessarily incident to or a consequential result of the District’s work.”

Talbott explained that the District does not attempt to eliminate the risk of 

flooding; indeed, that would be impossible in many areas of Harris County.

[T]he District cannot prevent all flooding. The area that is called 

White Oak Bayou is a natural geographical gateway and watershed 

that has transported storm water runoff long before the Allen Brothers 

landed in Houston and has flooded many times throughout history. In 

simple terms, a “watershed” is the region of land whose water drains 

into a body of water such as White Oak Bayou. Plaintiffs’ homes were 

built in this naturally occurring watershed near the natural waterway 

with its naturally occurring floodplain. The District is well aware of 

the flooding potential of this watershed for the reasons stated above 

(flat topography, clay soils, abundant rainfall, and history of 

flooding); the District is not aware of any flooding caused by actions 

of the District.

Talbott also explained that the District’s knowledge about flooding risks

evolved after the Pate Plan was adopted because more information became known 

and the various disciplines involved in designing and implementing flood-riskreduction plans—e.g., hydrology, hydraulics, civil engineering, geography, 

geotechnical engineering, surveying, and computer science—advanced in 

technology and in their understanding of the dynamics of flooding. Thus, the 

District relied on computer software developed by the Corps and private 

engineering firms in trying to predict “how stormwater might act under certain 

conditions.” He stated that the Pate Plan was not implemented because “it was 
23

based on knowledge and assumptions available at one point in time that were later 

proven to be scientifically inaccurate by actual storm events and further analysis by 

outside engineering firms.”

Talbott’s statements were not conclusory. A conclusory statement is one that 

does not provide the facts on which it is based. Arkoma Basin Exploration Co. v. 

FMH Assocs. 1990-A, Ltd., 249 S.W.3d 380, 389 n.32 (Tex. 2000).4 Talbott’s 

affidavit included the factual basis for his statements regarding the District’s intent. 

A governmental entity, unlike a natural person, can only testify through its 

employees or representatives. See Waterman S.S. Corp. v. Ruiz, 355 S.W.3d 387, 

402 (Tex. App.–Houston [1st Dist.] 2011, no pet.) (stating that legal entity’s 

representative may testify to facts regarding entity’s activities); Martinez v. Hays 

Const., Inc., 355 S.W.3d 170,178 (Tex. App.—Houston [1st Dist.] 2011, no pet.) 

(same). 

Because the District satisfied its burden of proof, the burden to establish 

intent shifted to the homeowners.

 4 For expert witnesses, a statement is also considered conclusory when the stated 

basis for the opinion does not actually support the opinion. Pollock, 284 S.W.3d at 

818. 
24

B. The homeowners did not create a fact issue on the District’s intent

In the trial court, the homeowners relied upon three categories of conduct by 

the Harris County entities that they claim were substantially certain to result in the 

flooding of their homes: (1) failure to fully implement the Pate Plan; (2) approval 

of upstream development; and (3) construction of a dam. I address each one 

separately.

1. Failure to implement the Pate Plan

The District’s failure to implement the Pate Plan cannot, without more, 

satisfy the intent element of the homeowners’ takings claim. The intent element 

cannot be satisfied by demonstrating that the governmental entity acted with 

negligence. City of El Paso v. Ramirez, 349 S.W.3d 181, 187 (Tex. App.—El Paso 

2011, no pet.) (“A governmental entity's failure to act, even in the face of evidence 

that curative measures are necessary to prevent future damage, rise only to the 

level of a negligence claim.”). A governmental entity’s knowledge “of the potential 

for” flooding, and “its subsequent failure to take measures to prevent such 

flooding,” is insufficient to satisfy this element. Id. Mere negligence does not 

constitute “an unconstitutional taking” because that “would be an anomalous result 

if . . . an entity otherwise generally entitled to immunity for negligence[ ] were 

subject to liability for something less than intentional behavior.” Gragg, 151 

S.W.3d at 554. Even “a finding of gross negligence does not supply the requisite 
25

intent to sustain liability of a governmental entity for a constitutional takings 

claim.” Karnes City v. Kendall, 172 S.W.3d 624, 629 (Tex. App.―San Antonio 

2005, pet. denied). And evidence that the governmental entity’s actions caused 

flooding does not establish the requisite intent. Ahart v. Tex. Dep’t of Transp., No. 

14-05-00027-CV, 2006 WL 2167223, at *4 (Tex. App.—Houston [14th Dist.] 

Aug. 1, 2006, pet. denied) (mem. op.).

In City of Keller, the Court held that the city’s failure to comply with its 

master drainage plan in approving a developer’s drainage plans did not show intent 

to cause flooding damage. 168 S.W.3d at 829. In City of El Paso, the court of 

appeals held that the city’s failure to comply with its landfill permit and new 

landfill regulations did not show intent to cause flooding damage. 349 S.W.3d at 

187. Additionally, prior warnings from the Texas Commission on Environmental 

Quality, the city’s own expert report, and previous experience with erosion and 

runoff did not show intent to cause flooding damage. Id. at 185−86; see also City 

of Van Alstyne v. Young, 146 S.W.3d 846, 850 (Tex. App.—Dallas 2004, no pet.) 

(concluding that city’s knowledge of prior pump problems was not same as 

knowledge that its decision not to replace pumps would cause flooding of 

plaintiff’s home); City of Del Rio v. Felton, No. 04-06-00091-CV, 2007 WL 

247655, at *7 (Tex. App.—San Antonio Jan. 31, 2007) (mem. op.) (holding that 
26

knowledge that watering of park caused damage to neighboring property did not 

establish intent to take plaintiffs’ property).

As the City of El Paso court explained, even when there is evidence that a 

governmental entity knew that the specific property damage was substantially 

certain to result from government inaction, it is not sufficient if it “fails to account 

for the State’s general immunity from liability for negligence, and risks public 

payment for damage for which the public received no benefit.” 349 S.W.3d at 186–

87. Like the intent evidence in City of El Paso, the homeowners’ intent evidence 

with regard to the District’s failure to implement the Pate Plan is evidence of 

negligence here, but it does establish the intent necessary for a takings claim. See 

id. “A governmental entity’s failure to act, even in the face of evidence that 

curative measures are necessary to prevent future damage, rise[s] only to the level 

of a negligence claim.” Id. at 187. 5

 5 The homeowners identify the District’s intentional act as the implementation of 

the Klotz Plan in lieu of the Pate Plan. But the homeowners cannot convert the 

District’s failure to implement the Pate Plan into an affirmative action by pairing it 

with the District’s use of the Klotz Plan. They have not argued or presented 

evidence tending to show that the implementation of the Klotz Plan caused them 

property damage that would not have occurred if the District had not implemented 

any flood control measures.
27

2. Approval of development6

The homeowners argue that their expert affidavit from Mays creates a fact 

issue on intent with respect to the District’s approval of upstream development.

Mays opined:

[The Harris County entities] approved development upstream of [the 

homeowners’ properties] 

o Knowing that development causes increased runoff 

downstream[;]

o Knowing that there was insufficient capacity in the bayou 

adjacent to [the homeowners’ properties] to handle any 

increased runoff from upstream development[; and]

o Knowing that no mitigation or insufficient mitigation was 

implemented by the developers associated with their 

upstream developments[.]

The District responds that even if Mays’s assertions were true, they do not 

provide evidence of the requisite intent because Mays’s theory that the upstream 

developers failed to include adequate detention was based on an assumption that 

had no “evidentiary support.” But even if we assume that all three of these 

 6 The Harris County entities have not argued that a governmental entity cannot be 

liable for approving a developer’s plans. We therefore do not consider that issue. 

See City of Keller, 168 S.W.3d at 810 (reserving this question “for another day”); 

but see id. at 833–34 (O’Neill, J., concurring) (stating that “[b]ecause the primary 

responsibility for a development’s design rests with the developer, and because the 

plat-approval process does not transfer such responsibility to the municipality, 

mere plat approval cannot be a basis” for liability and that "the developer’s 

defective drainage design,” rather than the city’s approval of the plat was the 

proximate cause of the flooding as a matter of law).
28

statements are supported by the summary judgment evidence, the District’s 

knowledge that runoff would increase and that the bayou could not handle the 

increase does not equate to knowledge that specific property damage was 

substantially certain to occur. For example, the runoff could fill the streets or yards 

but cause no property damage.

Regardless, Mays’s assertion regarding the adequacy of the developers’

mitigation efforts is conclusory. Inadequate detention cannot be assumed “merely 

because flooding subsequently occurred.” Mays conceded that he did not know 

which developments upstream of the homeowners’ homes were in fact developed 

with no or insufficient mitigation. The District also points out that it required new 

development to include either adequate onsite detention facilities or, for tracts of 

less than ten acres, a $3,000 per acre impact fee to be used for construction of 

larger regional detention facilities. The District presented evidence that it intended

to raise money via the impact fees to provide regional detention and flood-control 

measures, which the District believed would be more effective. Regardless of 

whether the District was correct or was negligent in its implementation of such 

regional measures, this evidence negates the homeowners’ reliance on the mere 

absence of detention facilities in new construction to establish intent. 

The District was in the midst of an ongoing flood control program. It was 

necessary, therefore, for the District to know that the flooding of the homeowners’ 
29

properties was substantially certain to occur as a result of additional development 

before the District completed its revised program. To demonstrate such knowledge, 

the homeowners had to show: (1) the amount of additional development that 

occurred in the time between the adoption of the Pate Plan and each of the three 

flood events; (2) the construction undertaken in that interim period both pursuant 

to and in lieu of the Pate Plan; and (3) the County was substantially certain the 

totality of the construction work would be insufficient. Instead, the homeowners 

offered proof that the entirety of the Pate Plan was not followed and that the Klotz 

Plan was less effective than the Pate Plan.

The homeowners did not present any “evidence that the [District] knew that 

the [homeowners’] property was being damaged or that damage was a necessary 

consequence” in the delay in completing the flood-control measures. Pollock, 284 

S.W.3d at 821. The District certainly knew that it was possible that the additional 

development in the area would increase runoff in the bayou and that a rainfall 

could occur that would cause some flooding,

7 but its “awareness of the mere 

possibility of damage is no evidence of intent.” Id. The homeowners had no 

evidence that the District’s decisions made downstream flooding before

completion of flood control measures “inevitable.” Gragg, 151 S.W.3d at 555; see 7 The very existence of a 100-year floodplain is an acknowledgment that a flood is 

likely to occur once every 100 years. As explained by Talbott, a 100-year flood is 

“a flood that statistically should occur once in 100 years, or more accurately . . .

[is] a 1% chance of being equaled or exceeded in any given year.” 
30

also Jennings, 142 S.W.3d at 315 (it is insufficient to show that the governmental 

entity’s action “sometimes results” in the claimed property damage). Just as in 

Pollock, the damage the homeowners claim—flood water flowing onto their land 

from upstream development—“is neither necessarily incident to or a consequential 

result of the [approval of the other developments].” “It can be prevented,” id., and 

the District established that it was in the process of taking measures to prevent it.

The homeowners’ true complaint is that the District could have prevented or 

lessened the risk of damage to their property but failed to do so. Such allegations 

might support a negligence claim but, absent evidence that the District took 

affirmative action that it knew would cause the damage to the homeowners’ 

properties, will not support a takings claim against a governmental entity.

The homeowners also contend that the District’s intent was demonstrated by 

evidence of reoccurrence: three floods in five years. Recurrence “is a probative 

factor” in determining whether the claimed property damage is “substantially 

certain to occur.” Gragg, 151 S.W.3d at 555. But only one of the three floods—the 

1989 flood—occurred before the County approved the developments in question. 

One flood does not establish recurrence. See Pollock, 284 S.W.3d at 821 (Tex. 

2009) (“The government’s knowledge must be determined as of the time it acted, 

not with benefit of hindsight.”). 
31

3. Construction of a dam8

Finally, Mays states in his affidavit that the District “constructed a dam 

downstream of [the homeowners’ properties] that was intended to ensure that [the 

homeowners’ properties] received no benefit from that portion of the [regional 

flood-control] plan that had been constructed downstream.” But Mays’s affidavit 

and reports do not provide any factual basis for this assertion of the District’s 

intent. See, e.g., City of Keller, 168 S.W.3d at 830 (requiring claimant to produce 

“objective indicia of intent” that governmental entity “knew identifiable harm was 

occurring or substantially certain to result”) (quoting Gragg, 151 S.W.3d at 555).

The District, on the other hand, presented evidence that it “never intended 

that the [dam would] cause flooding” and “never had any information that showed 

with substantial certainty that the temporary [s]tructure would cause flooding or 

that flooding would be necessarily incident to or necessarily a consequential result 

of [] building and maintaining the [s]tructure.” Talbott testified that transition 

control structures such as the dam used by the District, “are not known to increase 

any flooding risk” and “are commonly used in many waterways and have been 

built across Harris County, other counties, communities, and cities across the 

United States, and the United States Army Corps of Engineers has used transition 

 8 The homeowners argued this theory in their summary-judgment briefing but not in 

their appellate briefing. 
32

control structures on many of their projects.” He further testified that the dam used 

by the District was “typical” and was a temporary measure until channel work 

continued upstream. Thus, the homeowners failed to rebut the District’s evidence 

that it lacked the requisite intent for a takings claim and the attendant waiver of 

governmental immunity. 

Conclusion

Because the District has presented evidence establishing its lack of the 

requisite intent for a takings claim—the sole basis for the homeowners’ asserted 

waiver of the District’s governmental immunity—and the homeowners have not 

presented contrary evidence raising an issue of fact on intent, I would dismiss the 

homeowners’ claims against the District. I therefore dissent from the portion of the 

Court’s opinion that affirms the trial court’s order denying the plea to the 

jurisdiction with respect to the District. I concur in the remainder of the Court’s 

disposition.

Harvey Brown

Justice 

Panel consists of Justices Jennings, Sharp, and Brown.

Justice Brown, concurring and dissenting.