Believe me, I know full well how badly it sucks to be in the position you're in, and I'm not trolling you. I'm sympathetic, but also brutally honest, and I think you realize just how dire your personal situation is, which is a good start.
I also had 6 digit debt upon graduation (about 100 K), and missed the OCI/Biglaw boat by inches at a school ranked similar to yours. I also did an honors internship with a government agency both 2 L and 3 L year, and won "Best Brief" in my school's moot court contest.
Like you, I believed that somehow the "karma" of all this hard work would pay off somehow down the road, even though I missed Biglaw/OCI. It seemed hard to swallow that there would be no "career" to speak of given that I did well in law school and basically "did everything right." I had nearly a 4.0 in undergrad and won several writing/journalism competitions there, and was certain that firms would see this (along with my moot court win) and at least value my writing ability.
They didn't. I mass mailed over 600 resumes, got nothing but a handful of "no thanks" form letters in reply, networked very hard (I was a realtor prior to law school and had a lot of contacts in that industry, and hoped to do land use/environmental just like you).
Problem is that the Biglaw type land use/environmental firms want Top 14'ers or OCI superstars from TTT's, like the #1 or #2 person in the class. The others who land Biglaw from TTT's often had family connections or other assets (smoking hot girl, dad is a Federal judge, etc).
Once you fail to get Biglaw via OCI, it's over. You are not going to be an associate at any biglaw shop barring a miracle. And as we all know, thanks to the severity of bi-modal salary distribution, it's almost always either 160 K or like 35-45 K at shitlaw, unless you land a decent government gig at say 55-65 K, which is a non-issue now due to mass hiring freezes in the states & w/ Uncle Sam.
The mid-sized firms who do quality work in niche, non-shitlaw practice areas rarely recruit or hire recent grads. They prefer either ex-Biglaw laterals looking for better quality of life, people with a few years at a government agency, etc. A book of business or family/personal connections to get a book of business is also a huge plus. They don't have the time or inclination to train even very bright people with excellent law school grades, because doing well in law school and knowing how to practice law without constant supervision and questions are two very, very different things.
I found all this out the hard way. Eventually I broke down and just started replying to ads on lawjobs, craigslist etc as my loans were bearing down and I had to take anything I could get. I decided to try applying to low-end landlord-tenant eviction type firms just to get SOME real estate related experience. On one interview I landed, I asked the partner if they ever did any work on things like zoning/compliance, commercial deals, condemnation/takings, etc. He looked at me like I was insane and said "why do you ask that- do you think you're too good to do this garbage?" Just a total a-hole. He said the salary was 40 K non-negotiable and take it or leave it. He also straight up told me I was currently worthless to the firm as I had no courtroom experience and didn't know the ropes, etc.
Be advised that most shitlaw offers/interviews will proceed very much in this fashion. They'll bring in like 20 people, march them into a crappy conference room, tell them they're worthless and don't know anything, then dangle VERY lowball offers to see if you'll bite. There is no "negotiation" to it, as 19 more people are in the waiting room right behind you with their student loans bearing down on them as well. Grades/journal/etc don't matter a whit, since shitlaw work is mindless cut n' paste that secretaries crank out by the truckload. The court appearances are likewise a joke, and all these firms really need is a law license and a pulse to cover the calendar and churn the files.
I did end up landing a shitlaw job eventually in low-end insurance defense (fender bender auto accidents), worked there about 1.5 years, got a WHOPPING 1500 raise, and average about 55-60 hours a week of work, which was stressful and beyond miserable. Understand that you are merely building "experience" to get another shitty job at slightly better pay, not skills that will transfer to midlaw or other decent practice areas. In most shitlaw areas you'll "top out" at maybe 65 K after 4 or 5 years in the "trenches." Shitlaw billing rates are just too low to pay anyone not bringing in business 100 K or more. Understand also that in shitlaw, 5 years experience isn't much more valuable than 5 months, since most files are routine cut n' paste and not very difficult to churn.
I think law school leaves people with the impression that every case will have weird exceptions to rules, interesting facts, unique angles and nuances, etc. In reality 99% of legal work (esp shitlaw work) is routine and very predictable/boring. There are forms for everything and the partners always admonish you "not to reinvent the wheel" and deviate from the boilerplate. You see, most shitlaw files are flat fee, so the idea is to spend as little time as possible on each one. Even if a novel argument or more research could yield a better result, the business model doesn't allow for this as it operates on volume, not quality.
I'm happy to have left law for good, and my JD might actually help when I get my Masters in Ed. and start applying for admin jobs in public schools. But if I had to do over, I def. would not have attended law school. Nearly every attorney I know and/or worked with feels the same way. The compensation vs. the stress, headaches, and aggravation just ain't worth it. Hell, you can make 65 K driving a truck for UPS with a GED and have nothing to worry about when you leave work. You could likely make 40 K as a bartender at Applebees or something along those lines. I've actually driven a truck and bartended while moving from law into education (waiting on Praxis scores and background checks etc) and after Shitlaw both gigs were like a mardi gras by comparison.
HTH and good luck to you. PM me if you have any questions.