2111 N. Northgate Way, Suite 219
Seattle, WA 98133

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Latest News ItemNew WDOE Wetland Rating Habitat Scores

Latest News ItemMazama Pocket Gophers – What Do They Mean For Me?

Can you guess who leaves these tracks that we foun

Can you guess who leaves these tracks that we found on some of our recent field visits?
#raedeke #raedekeassociates #environmentalscience #nature #outdoors #ecology #consultants #consulting #fieldday #fieldwork #wildlife #biology #tracks #tracking #mud #pawprints

So far, 2020 has been the third wettest start to a

So far, 2020 has been the third wettest start to a year on record according to the national weather service. All that rain has a huge impact on local waterways. Be safe as you try to navigate through all the flooded roads. Or in our case, flooded wetlands.

#raedeke #raedekeassociates #environment #environmentalscience #nature #outdoors #water #wetlands #wetland #mitigation #wetlandmitigation #hydrology #flooding #rain

One reason it is important to continually monitor

One reason it is important to continually monitor wetland mitigation sites is that hydrologic changes can occur unexpectedly. At the site pictured here, water levels dropped suddenly, likely the result of the failure of a beaver dam downstream of the mitigation site. You can see by the marks on the vegetation that the water level was approximately 1.5 feet higher before this photograph was taken. Establishing and maintaining consistent hydrologic regimes is an important component to successful mitigation. Collecting regular site data will help to make any necessary changes to meet the performance goals of the mitigation site.

#raedeke #raedekeassociates #consultants #consulting #fieldday #fieldwork #water #wetlands #wetland #mitigation #wetlandmitigation #hydrology

An Ordinary High Water Mark (OHWM) serves as the d

An Ordinary High Water Mark (OHWM) serves as the defining point between the aquatic and terrestrial environments. As you can see in the photos above, delineating the OHWM along a river isn’t always straightforward. The OHWM may be many feet above or below the current level of a river at any given time, with extreme high and extreme low water levels potentially confounding efforts to determine its location accurately. You can see our pink and black flagging tape indicating the OHWM in the first photo. Determining the OHWM of a body of water on your property is very important because many critical area buffers are measured from this location.

#water #wetlands #wetland #wetlanddelineation #hydrology #river #streamscience #raedeke #raedekeassociates #environmentalscience #nature #WOTUS #watersoftheus #watersoftheunitedstates #consultants #consulting #fieldday #fieldwork

There are many components of a forest that determi

There are many components of a forest that determine whether it meets the definition of spotted owl habitat. One important component is the shrub cover. Shrub cover provides habitat for species such as snowshoe hare, voles, and mice - but too much shrub density can limit an owl’s ability to locate prey on the ground. Young Forest Marginal habitat is a type of spotted owl habitat that provides some of the characteristics needed by northern spotted owls for roosting, foraging, and dispersal. In western Washington, stands must have 25-60% overall ground shrub coverage to meet the definition of Young Forest Marginal. Pictured above, one of Raedeke’s wildlife biologists walks a transect tape through a stand to measure its shrub coverage and determine if the stand meets spotted owl habitat criteria.

#raedeke #raedekeassociates #ecology #fieldwork #wildlife #wildlifeecology #wildlifemanagement #biology #Wildlifeconservation #threatened #endangered #fauna #owls #spottedowls #northernspottedowl #forestpracticesboard #environmentalscience #consulting

It can be tricky to tell how water is getting to a

It can be tricky to tell how water is getting to a wetland. Especially in a scenario like the one pictured above with 4 separate pipes draining to a single culvert. Knowing how water enters and leaves an area can be crucial to determining if a site has wetland hydrology. A wetland, by definition, has saturated or inundated soils for a specific portion of the growing season, so depending on your water sources, you may or may not meet wetland criteria during the appropriate time of year.

#wetlands #wetland #raedeke #raedekeassociates #environment #environmentalscience #consultants #consulting #fieldday #fieldwork #water #wetlanddelineation #hydrology #groundwater #stormwater

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