Drainage Rights - Farm Service Agency

Drainage Rights - Farm Service Agency

Drainage Rights Dr. Matt Helmers Assistant Professor and Extension Agricultural Engineer Department of Agricultural and Biosystems Engineering Iowa State University Drainage Rights Drainage is necessary for crop production in many areas of Iowa Landowners are sensitive to practices that have potential to negatively impact drainage on their land

Drainage Rights and the IOWA CREP Program Technical advisory committee established to assist and advise the Iowa CREP on technical issues related to design and locations of wetlands to protect rights of individuals and Drainage Districts Technical Issues Specifically related to Drainage Rights Vertical separation between tile line invert and normal water level of wetland Maintain drainage rights of upstream landowners

Backwater surcharging of tile lines outside of the CREP easement area Wetland outlet/inlet designs for wetlands inside the tile zone Design standards to preserve rights of future drainage district improvements Technical Issues with Iowa CREP Wetland Design Vertical separation between a tile line invert and the normal water level of wetland or low flow water level of a channel

1 foot separation adequate for tile outlets Limit principal spillway design for storm stage event to 3.5 feet or less where auxiliary spillway is provided Tile invert Normal pool elevation Minimum 1 ft separation between tile invert and normal pool Technical Issues with Iowa CREP Wetland Design

Backwater surcharging tile lines outside of the CREP easement area: Committee concurred that no adverse effects would result to existing tile on adjacent property if the guidelines detailed in vertical separation are followed. Easements would be offered to the adjacent landowner under these circumstances, but would not stop the project from moving forward, provided

adjacent landowner still consents to the project. Technical Issues with Iowa CREP Wetland Design Wetland outlet/inlet designs for wetlands in the tile zone:

Recommend gravity flow designs with language Not more than 100% of gravity flow when downstream data is known, unless other information exists that prescribes some process to protect drainage rights. For drawdown structures, install orifice that limits outflow to 75% of tile capacity (Q) along with an approved management plan that allows for drawdown not sooner than 7 days following rain events greater than 2. Consider modified inlet protectors to lesson the build up of debris. Technical Issues with Iowa CREP Wetland Design

Design standards to preserve rights of future drainage improvements within the watershed: Shall allow for future drainage improvements to the most distant area, or lowest area, or the combination of both, that potentially may be drained by limiting normal wetland pool elevation such that a vertical difference of one foot for the outlet overfall, plus 0.001 grade from the pool to the potential new outlet, plus four feet for tile depth at the potential area to be drained.

Constructed Wetland County Road Watershed Area Intake Road PROFILE

Outlet Structure Berm Hydraulic OUTLET STRUCTURE DESIGN CONSIDERATIONS grade lin e

Recently Viewed Presentations

  • Camera Shots Extreme long shot/Long shot (XLS/LS) Also

    Camera Shots Extreme long shot/Long shot (XLS/LS) Also

    Eye-level angle. At eye-level... of course. Creates an equal level relationship. Low angle. Looks up at the subject. Creates the impression that the subject is powerful or strong. Can be used to make the viewer feel small or vulnerable. ......
  • URBAN LEGENDS by Don L. F. Nilsen and

    URBAN LEGENDS by Don L. F. Nilsen and

    * Urban Legends, like Hip Hop and Rap Exhibit many features of Literature: They are dramatic, and play on such emotions as fear or embarrassment. They are filled with such rhetorical devices as Hyperbole (overstatement), Antithesis, Symbolism, Irony, and especially...
  • Trans-acting siRNA

    Trans-acting siRNA

    Trans-acting siRNA Brett Johnson BMS265 Discovery Biogenesis Mechanism of Action Cellular Functions All ta-siRNAs from a TAS gene tend to have similar targets.
  • School Improvement Planning and your Title I, Part

    School Improvement Planning and your Title I, Part

    Instructional staff will implement Lucy Calkins Writing Strategies. Instructional staff will be provided professional development on the implementation of Lucy Calkins Writing Strategies. Title I Instructional staff will provide an extra45 minutes/day of reading instruction to students scoring in the...
  • Get to the ROOT of it! - 5th Grade Resources

    Get to the ROOT of it! - 5th Grade Resources

    Get to the ROOT of it! Unit 4. Roots: Cycl—circle—from Greek. Circ/circum—around—from Latin. Centr/center—middle—from Greek. Cycle—a set of events or actions that happen again and again in the same order; a repeating series of events or actions.
  • Administración de Proyectos de Software

    Administración de Proyectos de Software

    MetaCASE, herramientas que permiten la definición de nuestra propia técnica de modelado, se guardan en un repositorio y pueden ser usados por otros analistas, es como si definiéramos nuestro propio UML. CAST (Computer-Aided Software Testing), herramientas de soporte a la...
  • Teaching Diabetes Self-Management in 4 Hours (or Less)

    Teaching Diabetes Self-Management in 4 Hours (or Less)

    A taxonomy for learning, teaching, and assessing: A revision of Bloom's taxonomy of educational objectives. NY: Addison Wesley Longman. To be or not to be, that is the question. To be or not to be, that is the question. To...
  • Curved Mirrors - Central Bucks School District

    Curved Mirrors - Central Bucks School District

    A convex mirror has a focal length of -50 cm. A 20 cm tall object is placed on the principal axis, 100 cm from the mirror's surface. Construct a ray diagram for this set-up. Determine the image distance from the...