Mean Higher High Water (MHHW definition

Mean Higher High Water (MHHW means the arithmetic average of the elevations of the Higher High Waters of a Mixed Tide over a specific 19-year period. For shorter periods of observation, corrections are applied to eliminate known variations and reduce the result to the equivalent of a mean 19-year interval.
Sample 1Sample 2Sample 3
Mean Higher High Water (MHHW means a tidal datum. The average of the higher of
Sample 1Sample 2
Mean Higher High Water (MHHW means the average of the higher high water height of each tidal day over a total epoch (19 years).
Sample 1

Examples of Mean Higher High Water (MHHW in a sentence

  • By 2100, these same areas—which represent the majority of the public access provided as part of the project—could be flooded during King Tides (1-year storm event) and greater flood events under a low-emissions scenario, but would not flood at Mean Higher High Water (MHHW).

  • Sediment transport can be restored by removing armor, structures that infringe below Mean Higher High Water (MHHW), and other obstructions to littoral sediment transport such as groins and jetties.

  • Reports indicate the 2006 mean range of tides at the Customhouse Wharf in Charleston is 5.3 feet, with the Mean Higher High Water (MHHW) reported to be + 6.1 feet Mean Lower Low Water (MLLW), and Mean Tide (MT) reported as +2.8 ft MLLW.rainfall and slows upland drainage across the site.

  • Estuary Zones shall be applied to all estuarine water, intertidal areas, submerged and submersible lands and tidal wetlands up to the line of non-aquatic vegetation or the Mean Higher High Water (MHHW) line, whichever is most landward.

  • These areas are bounded on the upland by Mean Higher High Water (MHHW) datum, other than the lower reaches of three tributary rivers.

  • Section 3.01.02 Estuary Zones - General Estuary Zones shall be applied to all estuarine water, intertidal areas, submerged and submersible lands and tidal wetlands up to the line of non-aquatic vegetation or the Mean Higher High Water (MHHW) line, whichever is most landward.

  • The City of Alameda normally experiences tides that range from -0.2’ Mean Lower Low Water (MLLW) to +6.4’ Mean Higher High Water (MHHW), based on the NAVD88 datum.

  • On December 8, 1939, Leslie Salt’s predecessor, Stauffer Chemical, submitted a permit application to the War Department to dam First Slough, which separated the existing industrial salt production ponds from the undeveloped eastern section of the site, and to construct levees around the eastern section.16 The application shows the base of the proposed dam five feet below Mean Lower Low Water (MLLW) and 13 feet below Mean Higher High Water (MHHW) in First Slough.

  • Mean Higher High Water (MHHW): The average elevation of all higher high tides calculated over a complete tidal cycle of 18.6 years.1 Mean High Tide (MHT): The average elevation of all high tides, including spring tides and neap tides, calculated over a complete tidal cycle of 18.6 years.

  • Current and future high tide levels should be identified and mapped on the study area, specifically the current high tide as indicated by the Mean Higher High Water (MHHW) datum developed by NOAA, as well as future MHHW in the 2050s, 2080s, and 2100 using the most recent 90th percentile projections from the NPCC.

Related to Mean Higher High Water (MHHW

  • mean high water springs or “MHWS” means the highest level which spring tides reach on average over a period of time;

  • Fresh water means water, such as tap water, that has not been previously used in a process operation or, if the water has been recycled from a process operation, it has been treated and meets the effluent guidelines for chromium wastewater.

  • Ordinary high-water mark (NR 115.03(6)) means the point on the bank or shore up to which the presence and action of surface water is so continuous as to leave a distinctive mark such as by erosion, destruction or prevention of terrestrial vegetation, predominance of aquatic vegetation, or other easily recognized characteristics.

  • Seasonal high water table means the level below the natural surface of the ground to which water seasonally rises in the soil in most years.

  • High Water Mark means the highest line reached by the water of the sea during ordinary storms occurring during the most stormy period of the year, excluding exceptional or abnormal floods;

  • Very high radiation area means an area, accessible to individuals, in which radiation levels from radiation sources external to the body could result in an individual receiving an absorbed dose in excess of 5 Gy (500 rad) in one hour at one meter from a source of radiation or one meter from any surface that the radiation penetrates.

  • Potable water means water which meets the requirements of 35 Ill. Adm. Code 604 for drinking, culinary, and domestic purposes.

  • Raw water means water withdrawn from a reservoir or well prior to any physical treatment of such water.

  • Native Hawaiian means any individual who is a descendant of the aboriginal people who, prior to 1778, occupied and exercised sovereignty in the area that now constitutes the State of Hawaii.

  • Non-potable water means water not safe for drinking, personal, or culinary use as determined by the requirements of 35 Ill. Adm. Code 604.

  • Market Participant Energy Injection means transactions in the Day-ahead Energy Market and Real-time Energy Market, including but not limited to Day-ahead generation schedules, real- time generation output, Increment Offers, internal bilateral transactions and import transactions, as further described in the PJM Manuals.

  • Class B operator means the individual who has day-to-day responsibility for implementing applicable regulatory requirements established by the department. The Class B operator typically implements in-field aspects of operation, maintenance, and associated record keeping for the UST systems.

  • Project Water means water made available for delivery to the contractors by project conservation facilities and the transportation facilities included in the System.

  • Anti-Ragging Helpline means the Helpline established under clause (a) of Regulation 8.1 of these Regulations.

  • Class C operator means the individual responsible for initially addressing emergencies presented by a spill or release from an UST system. The Class C operator typically controls or monitors the dispensing or sale of regulated substances.

  • Ballast water means water with its suspended matter taken on board a ship to control trim, list, draught, stability or stresses of the ship.

  • waste water means used water containing substances or objects that is subject to regulation by national law.

  • Base Load Generation Resource means a Generation Capacity Resource that operates at least 90 percent of the hours that it is available to operate, as determined by the Office of the Interconnection in accordance with the PJM Manuals.

  • Hot water means water at a temperature of 110°F. or higher.

  • Generation Owner means a Member that owns, leases with rights equivalent to ownership, or otherwise controls and operates one or more operating generation resources located in the PJM Region. The foregoing notwithstanding, for a planned generation resource to qualify a Member as a Generation Owner, such resource shall have cleared an RPM auction, and for Energy Resources, the resource shall have a FERC-jurisdictional interconnection agreement or wholesale market participation agreement within PJM. Purchasing all or a portion of the output of a generation resource shall not be sufficient to qualify a Member as a Generation Owner. For purposes of Members Committee sector classification, a Member that is primarily a retail end- user of electricity that owns generation may qualify as a Generation Owner if: (1) the generation resource is the subject of a FERC-jurisdictional interconnection agreement or wholesale market participation agreement within PJM; (2) the average physical unforced capacity owned by the Member and its affiliates over the five Planning Periods immediately preceding the relevant Planning Period exceeds the average PJM capacity obligation of the Member and its affiliates over the same time period; and (3) the average energy produced by the Member and its affiliates within PJM over the five Planning Periods immediately preceding the relevant Planning Period exceeds the average energy consumed by the Member and its affiliates within PJM over the same time period.

  • Greenhouse Gas means carbon dioxide, methane, nitrous oxide, hydrofluorocarbons, perfluorocarbons, and sulfur hexafluoride.

  • Deep poverty pocket means a population census tract having a

  • Consenting working interest owner means any working interest owner who enters into an agreement with SWN pertaining to the operation of the Posey B Unit.

  • Diameter at Breast Height (DBH) means the diameter of a tree at 4 1/2 feet above the ground measured from the uphill side.

  • Class I renewable energy means electric energy produced from

  • Eligible Corporation means any domestic C corporation (as defined in section 1361(a)(2) of the Code) other than a corporation which is exempt from, or is not subject to, tax under section 11 of the Code, an entity described in section 851(a) or 856(a) of the Code, a REMIC; or an organization to which part I, subchapter T, chapter 1, subtitle A of the Code applies. The Term "Related Person" means any person that bears a relationship to the Transferee enumerated in section 267(b) or 707(b)(1) of the Code, using "20 percent" instead of "50 percent" where it appears under the provisions; or is under common control (within the meaning of section 52(a) and (b) of the Code) with the Transferee.