| #D001 | | ERO | Environmental Registry of Ontario | high |
| #D002 | | Cumulative impacts | the combined effect of numerous single developments. | high |
| #D003 | | deleterious substance | Any substance with a potentially harmful chemical, physical (including temperature) or biological effect on fish or fish habitat | high |
| #D004 | | Enhanced protection | corresponds to the end-of-pipe storage volumes required for the long-term average removal of 80% of suspended solids. | high |
| #D005 | | Normal protection | corresponds to the end-of-pipe storage volumes required for the long-term average removal of 70% of suspended solids. | high |
| #D006 | | Basic protection | corresponds to the end-of-pipe storage volumes required for the long-term average removal of 60% of suspended solids. | high |
| #D007 | | active channel | that part of the channel which conveys the dry weather flow and flow from frequent precipitation events. | high |
| #D008 | | erosive forces | forces tending to dislodge and transport boundary materials and they are related to the volume and rate at which sediment and water are delivered to the stream. | high |
| #D009 | | bankfull flow stage | when water fills the active channel without spilling out onto the floodplain. | high |
| #D010 | | first order | Each fingertip, or headwater channel, is designated as a segment of the first order. | high |
| #D011 | | MTO | Ministry of Transportation | high |
| #D012 | | MOE | Ministry of the Environment | high |
| #D013 | | SWMP | Stormwater Management Practices | high |
| #D014 | | SS | Suspended Solids | high |
| #D015 | | SCS | Soil Conservation Service | high |
| #D016 | | SWM | Stormwater Management | high |
| #D017 | | SWAMP | Stormwater Assessment and Monitoring Performance | high |
| #D018 | | DRC | Distributed Runoff Control | high |
| #D019 | | SI | Stability Index | high |
| #D020 | | RGA | Rapid Geomorphic Assessment | high |
| #D021 | | ANSI | Area of Natural or Scientific Interest | high |
| #D022 | | ESA | Environmentally Sensitive Area | high |
| #D023 | | LOD | Large Organic Debris | high |
| #D024 | | active storage component | that portion of a facility that drains after an event | high |
| #D025 | | Habitat compensation | typically involves the replacing of damaged habitat with newly created habitat or improving the productive capacity of other aquatic habitat at or near the area of impact. | high |
| #D026 | | long-term average suspended solids removals | refer to the removal by the SWM facility of suspended solids from the site runoff for the entire range of rainfall events on that site for a long period of time, at least 10 years. | high |
| #D027 | | thalweg | the deepest point in a channel’s cross- section | high |
| #D028 | | TP | total phosphorus | high |
| #D029 | | CDA | Catchment Drainage Area | high |
| #D030 | | BFL | Bankfull | high |
| #D031 | | Entrenchment Ratio | provides an indication of the flow conveyance capacity of the active channel. | high |
| #D032 | | Stability Index Value | A stable stream has an innate ability to absorb a certain amount of change in the sediment-flow regime before the threshold of adjustment is reached. | high |
| #D033 | | mm | millimetres | high |
| #D034 | | ha | hectare | high |
| #D035 | | m³ | cubic metres | high |
| #D036 | | m³/ha | cubic metres per hectare | high |
| #D037 | | E. | Escherichia | high |
| #D038 | | DEV | development | high |
| #D039 | | km² | squared kilometres | high |
| #D040 | | m³/s | cubic metres per second | high |
| #D041 | | m³/s/ha | cubic metres per second per hectare | high |
| #D042 | | m | metres | high |
| #D043 | | m/km | metres per kilometre | high |
| #D044 | | water surplus | excess of precipitation over evapotranspiration | high |
| #D045 | | Hybrid Wet Pond/Wetland systems | have 50-60% of their permanent pool volume in deeper portions of the facility (e.g., forebay, wet pond). | high |
| #D046 | | infiltration factor | determined by summing a factor for topography, soils and cover. | high |
| #D047 | | n/a | not applicable | high |
| #D048 | | overcontrol | Controlling post-development peak flow rates through storage to values less than pre-development conditions | high |
| #D049 | | i.e. | that is | high |
| #D050 | | e.g. | for example | high |
| #D051 | | etc | and so on | high |
| #D052 | | < | less than | high |
| #D053 | | ≤ | less than or equal to | high |
| #D054 | | ≥ | greater than or equal to | high |
| #D055 | | CDADEV | Catchment Drainage Area of the Development | high |
| #D056 | | T | Entrenchment Ratio | high |
| #D057 | | DBFL | Bankfull Depth | high |
| #D058 | | Distributed Runoff Control (DRC) | The preservation of the balance between the erosive and resisting forces about the channel perimeter such that the stream is just able to move its sediment load. | high |
| #D059 | | headwater channel | Each fingertip, or headwater channel, is designated as a segment of the first order. | high |