| (a) 1% Annual Chance Flood Event--Flood event having
a 1% chance of being equaled or exceeded in any given year, also referred
to as the base flood or 100-year flood.
(b) 0.2% Annual Chance Flood Event--Flood event having
a 0.2% chance of being equaled or exceeded in any given year, also
referred to as the 500-year flood.
(c) Board--The governing body of the Texas Water Development
Board.
(d) Critical Facilities--Facilities and infrastructure
that are critical to the health and welfare of the population and
that are especially important following flood hazard events.
(e) Emergency Need--The need for projects and actions
to address a flood hazard that is expected to cause the loss of function
of critical facilities or to alleviate immediate threat to life and
property from flooding such as imminent anticipated failure of infrastructure.
(f) Executive Administrator (EA)--The Executive Administrator
of the TWDB or a designated representative.
(g) FEMA--Federal Emergency Management Agency
(h) FIRM--Flood Insurance Rate Map
(i) Flood--A general and temporary condition of partial
or complete inundation of normally dry land area from overflow of
inland or tidal waters or from the unusual and rapid accumulation
or runoff of surface waters from any source.
(j) Flood-prone--Areas with known risk of flooding
primarily during storm events either from existing inundation maps,
studies, and/or historic knowledge of flood events. Flood-prone areas
may include, but are not limited to, the floodplain, the floodway,
the flood fringe, wetlands, riparian buffers, or other areas adjacent
to the main channel.
(k) Floodplain--That area of land subject to periodic
inundation by floodwaters.
(l) Floodplain Management--The operation of an overall
program of corrective and preventative measures for reducing risk
and impact of flooding.
(m) Flood Mitigation--The implementation of actions,
including both structural and non- structural solutions, to reduce
flood risk to protect against the loss of life and property.
(n) Flood Management Evaluation (FME)--A proposed study
to identify and assess and quantify flood risk or identify, evaluate,
and recommend flood risk reduction solutions.
(o) Flood Management Strategy (FMS)--Flood risk reduction
solution ideas and strategies that do not belong in FME or FMP categories.
Examples may include regulatory enhancements, development of entity-wide
buyout programs, and public outreach and education.
(p) Flood Mitigation Project (FMP)--A proposed project,
both structural and non-structural, that has a non-zero capital costs
or other non-recurring cost and that when implemented will reduce
flood risk, mitigate flood hazards to life or property.
(q) Flood Planning Region (FPR)--A geographic area
designated by the Board pursuant to Texas Water Code §16.062.
(r) Flood Risk--Generally describes the hazard from
flood events to life and property, including the likelihood of a hazard
occurring; the magnitude of the hazard; the number of people and properties
exposed to the hazard; and the vulnerability and resilience of the
people and properties exposed to the hazard.
(s) Flood Risk Map--A map that shows flood risk for
Texas communities at some level of detail using best available data.
(t) GIS--Geographic Information System
(u) GLO--General Land Office
(v) HUC--Hydrologic Unit Code level (e.g., HUC10) as
delineated by the United States Geological Survey.
(w) Hydrologic and Hydraulic Model--Mathematical model
created utilizing computer software that simulates rainfall runoff
flow to estimate the extent of water levels and flooding and to test
potential ways to reduce flood risk.
(x) Nature-based Flood Mitigation--Mitigation approaches
involving the use of natural features, materials, and processes to
reduce the risk and impacts of flooding.
(y) Neighboring Area--Any area, including but not limited
to upstream and downstream areas, potentially affected by the proposed
FMP.
(z) Negative Effect--An increase in flood-related risks
to life and property, either upstream or downstream of the proposed
project. The RFPG may adopt a standard that is more restrictive than
the standard provided in TWDB guidance.
(aa) Planning Group Sponsor--A political subdivision
designated by the Regional Flood Planning Group as authorized to receive
funds for developing or revising regional flood plans. A Planning
Group Sponsor must have legal authority to conduct procurement of
professional services and enter into the contracts necessary for regional
flood planning.
(bb) Political Subdivision--County, city, or other
body politic or corporate of the state, including any district or
authority created under Article III, Section 52 or Article XVI, Section
59 of the Texas Constitution and including any interstate compact
commission to which the state is a party and any nonprofit water supply
corporation created and operating under Chapter 67 of the Texas Water
Code.
(cc) Potentially Feasible Flood Mitigation Project
or Potentially Feasible Flood Management Strategy--An FMP or FMS that
is assessed or considered to be permittable, constructible, economically
viable, and implementable.
(dd) Regional Flood Plan (RFP)--The plan adopted or
amended by a Regional Flood Planning Group pursuant to Texas Water
Code §16.062 (relating to Regional Flood Plans) and this chapter.
(ee) Regional Flood Planning Group (RFPG)--A group
designated by the Board that develops a Regional Flood Plan, pursuant
to Texas Water Code §16.062.
(ff) Residual Risk--The remaining flood risk in an
area after the completion of an FMP or FMS or set of FMPs or FMSs
that reduce flood risk in that same area.
(gg) State Flood Plan (SFP)--The most recent State
Flood Plan adopted or amended by the Board under Texas Water Code §16.061
(relating to State Flood Plan).
(hh) State Flood Planning Database--A database to be
developed and maintained by the TWDB that stores data related to Flood
Planning. It is used to collect, analyze, and disseminate regional
and statewide Flood Planning data.
(ii) State Population Projections--Population projections
contained in the most recently adopted State Water Plan as further
assembled geographically based on HUC watershed or other appropriate
flood-related geographic features determined by the TWDB.
(jj) TWC--Texas Water Code
(kk) TWDB--Texas Water Development Board
|
