Riffle and pool complexes

{
  "id": "MLC-T-ENV-024309",
  "term": "Riffle and pool complexes",
  "field": "Environment",
  "definition": "Riffle and pool complexes sometimes characterize steep gradient sections of streams. Such stream sections are recognizable by their hydraulic characteristics. The rapid movement of water over a course substrate in riffles results in a rough flow, a turbulent surface, and high dissolved oxygen levels in the water. Pools are deeper areas associated with riffles. A slower stream velocity, a streaming flow, a smooth surface, and a finer substrate characterize pools.",
  "subject": "Water",
  "references": [
    "Aquatic Resources Awareness Course for Real Estate Appraisers Glossary"
  ],
  "url": "https://mlchart.com/terminology/environment/riffle-and-pool-complexes/"
}