Rain Garden Design Guidelines

In other words it should not be a stand alone feature.

Rain garden design guidelines. 1 choose the right location 2 composition of a rain garden 3 calculate the size and depth 4 consider infiltration 5 manage flows 6 select the planting q u a l. It is a work in progress that will be periodically updated to reflect new knowledge and techniques. Proper rain garden design dictates that only perennial plants be installed.

The size and depth of the rain garden the infiltration rate of the soil the size of the uphill drainage area the amount of impervious or semi impervious surfaces rooftops driveways sidewalks and mowed turf in the uphill drainage area the slope of the site and the amount intensity and duration of rainfall all influence rain garden effectiveness in. However for the purposes of this guide a rain garden is a simple intervention designed to receive rainwater which has come from a downpipe or a large do mestic paved area. The term rain garden is wide ranging and has been used to describe a number of different features see why rain gardens.

Design guide 10 1 components of a rain garden 10 2 use and suitability 11 3 location selection 12 4 basic sizing procedure 13 4 1 key parameters 13 4 2 sizing formulae 14 5 standard details 18 5 1 typical cross section 18 5 2 typical layout plan 18. Rain garden design construction and maintenance manual 3 table of contents introduction 8 part a. Rain garden design tips.

Step by step instructions on how to design build plant and maintain a residential rain garden. Rain gardens not only beautify an area they bring larger benefits to the environment both locally and beyond. Consider all the rules of composition screening and circulation not just the rule that says to put a rain garden in a low spot 10 feet from the house.

This rain garden design manual is the first of its kind in iowa and can be used as a re source document. Think of a rain garden just like a border or foundation planting rather than a beloved specimen tree. Carolina clear rain garden manual 2 rain gardensa guide to learn all about rain gardens and their potential to protect local water quality.

Plants for a rain garden. The goal of a properly functioning rain garden is to reduce polluted stormwater. This is due to the way a rain garden functions as a water abatement feature which depends on the deep roots of perennial plants.